حاسبة القيمة الزمنية للنقود والأصول الرقمية

أتقن القرارات المالية مع الأصول التقليدية والرقمية. احسب القيمة الحالية، القيمة المستقبلية، المدفوعات، والعوائد للدولار الأمريكي، بيتكوين، إيثريوم، والعملات المشفرة الرئيسية.

حاسبة القيمة الزمنية للنقود بـ5 مفاتيح مع الأصول الرقمية

أدخل أي 4 قيم واحسب القيمة الخامسة. تعمل مع العملات التقليدية والعملات المشفرة الرئيسية بما في ذلك بيتكوين، إيثريوم، والمزيد.

دولار أمريكي ($)
بيتكوين (BTC)
إيثريوم (ETH)
سولانا (SOL)
وِيا (WIA)
إكس آر بي (XRP)
القيمة الحالية (PV)
القيمة المستقبلية (FV)
الدفعة (PMT)
معدل الفائدة (I/Y)
الفترات (N)
Traditional assets: 3-12%, Crypto: 5-30%
قسط عادي (نهاية)
قسط مستحق (بداية)

حاسبة دفعات القرض

احسب الدفعات الشهرية والفائدة الإجمالية وجداول السداد للرهون العقارية وقروض السيارات والقروض الشخصية

حاسبة قيمة المعاش السنوي

احسب القيم الحالية والمستقبلية للمعاشات السنوية العادية والمستحقة. مثالي لتخطيط التقاعد وتحليل الاستثمار

حاسبة تحليل الاستثمار

قارن خيارات الاستثمار من خلال حساب العوائد والمعدلات المطلوبة ونقاط التعادل. مثالية لاتخاذ قرارات الاستثمار.

تحليل صافي القيمة الحالية

تقييم ربحية المشروع من خلال حساب صافي القيمة الحالية ومعدل العائد الداخلي. أدخل التدفقات النقدية للتحليل الشامل للاستثمار.

Enter positive values for cash inflows, negative for outflows

سيناريوهات البدء السريع

رهن عقاري لمدة 30 عاماً
قرض 300 ألف دولار بنسبة 6.5٪ لمدة 30 عاماً
تخطيط التقاعد
1000 دولار شهرياً لمدة 25 عاماً بنسبة 8٪
صندوق الدراسة الجامعية
25 ألف دولار اليوم تنمو إلى 100 ألف دولار في 18 عاماً
قرض السيارة
قرض سيارة 40 ألف دولار بنسبة 5.5٪ لمدة 5 سنوات
استثمار البيتكوين
1 بيتكوين ينمو بنسبة 15٪ لمدة 5 سنوات
استثمار إيثيريوم المنتظم
0.1 إيثيريوم شهرياً لمدة 3 سنوات بنسبة 20٪
استثمار WIA
1000 وِيا + 100 شهرياً لمدة 10 سنوات

تحتفل بنجاحك المالي؟ حان وقت مكافأة نفسك!

التخطيط المالي الذكي يستحق مكافأة - اكتشف عروض سفر مذهلة حول العالم

فنادق حجز Trip.com Hotels.com GetYourGuide

✨ Smart Nation's Core Infrastructure: WIA Code ✨

توصيل بالطائرات بدون طيار والروبوتات، القيادة الذاتية، الإنقاذ في حالات الطوارئ والمزيد - اختبر المستقبل خلال 30 يوماً، مجاناً تماماً لبلدك!

تعرف أكثر على رمز WIA

🤖 اختر مساعد الذكاء الاصطناعي

💬 ChatGPT
الأكثر تنوعاً • الأفضل للمهام العامة
→ chat.openai.com
🧠 Claude
أفضل تحليل منطقي • مثالي للتحليل
→ claude.ai
✨ Gemini مجاني
حدود يومية مجانية • دردشة مدمجة
→ مدمج أدناه
🌟 Choose the best AI for your task
, expectedReturn: { min: 3, max: 12, default: 8 }, riskLevel: 'منخفض' }, 'بيتكوين': { name: 'بيتكوين', symbol: 'بيتكوين', expectedReturn: { min: 5, max: 40, default: 15 }, riskLevel: 'مرتفع جداً', currentPrice: 97000 // Mock price - in production would use API }, 'إيثيريوم': { name: 'إيثيريوم', symbol: 'إيثيريوم', expectedReturn: { min: 8, max: 35, default: 20 }, riskLevel: 'مرتفع جداً', currentPrice: 3400 }, 'سولانا': { name: 'سولانا', symbol: 'سولانا', expectedReturn: { min: 10, max: 45, default: 25 }, riskLevel: 'مرتفع للغاية', currentPrice: 195 }, 'إيه دي إيه': { name: 'كاردانو', symbol: 'إيه دي إيه', expectedReturn: { min: 5, max: 30, default: 18 }, riskLevel: 'مرتفع جداً', currentPrice: 1.15 }, 'إكس آر بي': { name: 'إكس آر بي', symbol: 'إكس آر بي', expectedReturn: { min: 8, max: 35, default: 22 }, riskLevel: 'مرتفع جداً', currentPrice: 3.20 } }; // Asset Type Selection function setAssetType(assetType) { document.querySelectorAll('[data-asset]').forEach(option => { option.classList.remove('active'); }); event.target.classList.add('active'); currentAssetType = assetType; updateAssetLabels(); updatePriceDisplay(); updateRateHints(); toggleCryptoDisclaimer(); } // Update labels based on asset type function updateAssetLabels() { const asset = CRYPTO_ASSETS[currentAssetType]; const symbol = currentAssetType === 'دولار أمريكي' ? ' // Tab Management function switchTab(tabName) { document.querySelectorAll('.tab-content').forEach(tab => { tab.classList.remove('active'); }); document.querySelectorAll('.tab-button').forEach(btn => { btn.classList.remove('active'); }); document.getElementById(tabName + 'تبويب').classList.add('active'); event.target.classList.add('active'); } // Solve For Selection function setSolveFor(solveType) { document.querySelectorAll('.solve-for-option').forEach(option => { option.classList.remove('active'); }); event.target.classList.add('active'); currentSolveFor = solveType; // Clear the field we're solving for const fieldMap = { 'pv': 'presentValue', 'fv': 'futureValue', 'pmt': 'payment', 'rate': 'interestRate', 'periods': 'periods' }; document.getElementById(fieldMap[solveType]).value = ''; } // Annuity Type Selection function setAnnuityType(type) { document.querySelectorAll('.toggle-button').forEach(btn => { btn.classList.remove('active'); }); event.target.classList.add('active'); currentAnnuityType = type; } // Main TVM Calculation function calculateTVM() { try { const pv = parseFloat(document.getElementById('presentValue').value) || 0; const fv = parseFloat(document.getElementById('futureValue').value) || 0; const pmt = parseFloat(document.getElementById('payment').value) || 0; const rate = parseFloat(document.getElementById('interestRate').value) || 0; const periods = parseFloat(document.getElementById('periods').value) || 0; const compFreq = parseInt(document.getElementById('compoundingFreq').value) || 12; if (rate <= 0 && currentSolveFor !== 'rate') { showNotification('Interest rate must be greater than 0', 'error'); return; } if (periods <= 0 && currentSolveFor !== 'periods') { showNotification('Number of periods must be greater than 0', 'error'); return; } const result = solveTVM(pv, fv, pmt, rate, periods, compFreq, currentSolveFor, currentAnnuityType); displayTVMResult(result); showOTA(); trackEvent('tvm_calculated', { solveFor: currentSolveFor }); } catch (error) { showNotification(`Calculation error: ${error.message}`, 'error'); } } // Core TVM Solver function solveTVM(pv, fv, pmt, rate, periods, compFreq, solveFor, annuityType) { const periodicRate = rate / 100 / compFreq; const totalPeriods = periods * compFreq; let result = {}; switch (solveFor) { case 'pv': result.value = calculatePresentValue(fv, pmt, periodicRate, totalPeriods, annuityType); result.label = 'القيمة الحالية'; break; case 'fv': result.value = calculateFutureValue(pv, pmt, periodicRate, totalPeriods, annuityType); result.label = 'Future Value'; break; case 'pmt': result.value = calculatePayment(pv, fv, periodicRate, totalPeriods, annuityType); result.label = 'مبلغ الدفع'; break; case 'rate': const solvedRate = calculateInterestRate(pv, fv, pmt, totalPeriods, annuityType); result.value = solvedRate * compFreq * 100; result.label = 'معدل الفائدة السنوي'; result.isPercentage = true; break; case 'periods': const solvedPeriods = calculatePeriods(pv, fv, pmt, periodicRate, annuityType); result.value = solvedPeriods / compFreq; result.label = 'عدد الفترات'; result.isYears = true; break; } // Calculate additional details const effectiveRate = Math.pow(1 + periodicRate, compFreq) - 1; const totalPayments = Math.abs(pmt) * totalPeriods; result.effectiveRate = effectiveRate * 100; result.totalPayments = totalPayments; if (solveFor === 'pv') { result.totalInterest = Math.abs(result.value) - Math.abs(fv) + totalPayments; } else if (solveFor === 'fv') { result.totalInterest = Math.abs(result.value) - Math.abs(pv) - totalPayments; } else { result.totalInterest = totalPayments - Math.abs(pv); } return result; } // Present Value Calculation function calculatePresentValue(fv, pmt, rate, periods, type) { let pv = 0; if (fv !== 0) { pv += fv / Math.pow(1 + rate, periods); } if (pmt !== 0 && rate !== 0) { const annuityPV = pmt * (1 - Math.pow(1 + rate, -periods)) / rate; if (type === 'due') { pv += annuityPV * (1 + rate); } else { pv += annuityPV; } } else if (pmt !== 0 && rate === 0) { pv += pmt * periods; } return -pv; // Financial calculator convention } // Future Value Calculation function calculateFutureValue(pv, pmt, rate, periods, type) { let fv = 0; if (pv !== 0) { fv += -pv * Math.pow(1 + rate, periods); } if (pmt !== 0 && rate !== 0) { const annuityFV = pmt * (Math.pow(1 + rate, periods) - 1) / rate; if (type === 'due') { fv += annuityFV * (1 + rate); } else { fv += annuityFV; } } else if (pmt !== 0 && rate === 0) { fv += pmt * periods; } return fv; } // Payment Calculation function calculatePayment(pv, fv, rate, periods, type) { if (rate === 0) { return -(pv + fv) / periods; } const pvFactor = pv * Math.pow(1 + rate, periods); const numerator = -(pvFactor + fv); const denominator = (Math.pow(1 + rate, periods) - 1) / rate; let pmt = numerator / denominator; if (type === 'due') { pmt = pmt / (1 + rate); } return pmt; } // Interest Rate Calculation (Newton-Raphson method) function calculateInterestRate(pv, fv, pmt, periods, type) { if (pv === 0 && pmt === 0) return 0; if (fv === 0 && pmt === 0) return 0; let rate = 0.1; // Initial guess const tolerance = 1e-8; const maxIterations = 100; for (let i = 0; i < maxIterations; i++) { const f = evaluateTVMFunction(pv, fv, pmt, rate, periods, type); const df = evaluateTVMDerivative(pv, fv, pmt, rate, periods, type); if (Math.abs(df) < tolerance) break; const newRate = rate - f / df; if (Math.abs(newRate - rate) < tolerance) { return newRate; } rate = newRate; } return rate; } // TVM Function Evaluation function evaluateTVMFunction(pv, fv, pmt, rate, periods, type) { if (rate === 0) { return pv + fv + pmt * periods; } const pvTerm = pv; const fvTerm = fv / Math.pow(1 + rate, periods); let pmtTerm = 0; if (pmt !== 0) { pmtTerm = pmt * (1 - Math.pow(1 + rate, -periods)) / rate; if (type === 'due') { pmtTerm *= (1 + rate); } } return pvTerm + fvTerm + pmtTerm; } // TVM Derivative Evaluation function evaluateTVMDerivative(pv, fv, pmt, rate, periods, type) { const h = 1e-8; const f1 = evaluateTVMFunction(pv, fv, pmt, rate + h, periods, type); const f2 = evaluateTVMFunction(pv, fv, pmt, rate - h, periods, type); return (f1 - f2) / (2 * h); } // Periods Calculation function calculatePeriods(pv, fv, pmt, rate, type) { if (rate === 0) { return -(pv + fv) / pmt; } // Simplified calculation for common cases if (pmt === 0) { return Math.log(-fv / pv) / Math.log(1 + rate); } // For annuity calculations, use iterative method let periods = 10; // Initial guess const tolerance = 1e-8; const maxIterations = 100; for (let i = 0; i < maxIterations; i++) { const calculatedFV = calculateFutureValue(pv, pmt, rate, periods, type); const error = Math.abs(calculatedFV - fv); if (error < tolerance) break; // Adjust periods based on error if (calculatedFV < fv) { periods += 0.1; } else { periods -= 0.1; } if (periods <= 0) { periods = 0.1; } } return periods; } // Display TVM Results function displayTVMResult(result) { const resultContainer = document.getElementById('tvmResult'); const resultLabel = document.getElementById('resultLabel'); const resultValue = document.getElementById('resultValue'); const effectiveRate = document.getElementById('effectiveRate'); const totalPayments = document.getElementById('totalPayments'); const totalInterest = document.getElementById('totalInterest'); resultLabel.textContent = result.label; if (result.isPercentage) { resultValue.textContent = result.value.toFixed(2) + '%'; } else if (result.isYears) { resultValue.textContent = result.value.toFixed(1) + ' years'; } else { resultValue.textContent = formatCurrency(result.value); } effectiveRate.textContent = result.effectiveRate.toFixed(2) + '%'; totalPayments.textContent = formatCurrency(result.totalPayments); totalInterest.textContent = formatCurrency(result.totalInterest); resultContainer.style.display = 'block'; } // Loan Calculator function calculateLoan() { const principal = parseFloat(document.getElementById('loanAmount').value) || 0; const rate = parseFloat(document.getElementById('loanRate').value) || 0; const years = parseFloat(document.getElementById('loanTerm').value) || 0; const freq = parseInt(document.getElementById('paymentFreq').value) || 12; if (principal <= 0 || rate <= 0 || years <= 0) { showNotification('يرجى إدخال معايير قرض صحيحة', 'error'); return; } const periodicRate = rate / 100 / freq; const totalPayments = years * freq; // Calculate monthly payment using PMT formula const payment = principal * (periodicRate * Math.pow(1 + periodicRate, totalPayments)) / (Math.pow(1 + periodicRate, totalPayments) - 1); const totalOfPayments = payment * totalPayments; const totalInterest = totalOfPayments - principal; const interestPercentage = (totalInterest / principal) * 100; // Display results document.getElementById('loanPayment').textContent = formatCurrency(payment); document.getElementById('totalLoanPayments').textContent = formatCurrency(totalOfPayments); document.getElementById('totalLoanInterest').textContent = formatCurrency(totalInterest); document.getElementById('interestPercentage').textContent = interestPercentage.toFixed(1) + '%'; document.getElementById('loanResult').style.display = 'block'; // Generate amortization table generateAmortizationTable(principal, payment, periodicRate, 12); showOTA(); } // Generate Amortization Table function generateAmortizationTable(principal, payment, periodicRate, numPayments) { const container = document.getElementById('amortizationData'); let balance = principal; let html = `
رقم الدفع
الدفع
الفائدة
المبلغ الأساسي
الرصيد
`; for (let i = 1; i <= numPayments; i++) { const interestPayment = balance * periodicRate; const principalPayment = payment - interestPayment; balance -= principalPayment; html += `
${i}
${formatCurrency(payment)}
${formatCurrency(interestPayment)}
${formatCurrency(principalPayment)}
${formatCurrency(balance)}
`; } container.innerHTML = html; document.getElementById('amortizationTable').style.display = 'block'; } // Annuity Calculator function calculateAnnuity() { const payment = parseFloat(document.getElementById('annuityPayment').value) || 0; const rate = parseFloat(document.getElementById('annuityRate').value) || 0; const periods = parseInt(document.getElementById('annuityPeriods').value) || 0; const timing = document.getElementById('annuityTiming').value; if (payment <= 0 || rate <= 0 || periods <= 0) { showNotification('يرجى إدخال معايير أقساط صحيحة', 'error'); return; } const periodicRate = rate / 100 / 12; // Assuming monthly payments // Calculate present value let pv = payment * (1 - Math.pow(1 + periodicRate, -periods)) / periodicRate; // Calculate future value let fv = payment * (Math.pow(1 + periodicRate, periods) - 1) / periodicRate; // Adjust for annuity due if (timing === 'due') { pv *= (1 + periodicRate); fv *= (1 + periodicRate); } const totalPayments = payment * periods; const interestEarned = fv - totalPayments; const effectiveRate = Math.pow(1 + periodicRate, 12) - 1; // Display results document.getElementById('annuityPV').textContent = formatCurrency(pv); document.getElementById('annuityFV').textContent = formatCurrency(fv); document.getElementById('totalAnnuityPayments').textContent = formatCurrency(totalPayments); document.getElementById('annuityInterest').textContent = formatCurrency(interestEarned); document.getElementById('annuityEffectiveRate').textContent = (effectiveRate * 100).toFixed(2) + '%'; document.getElementById('annuityResult').style.display = 'block'; showOTA(); } // Investment Analysis function calculateInvestment() { const initial = parseFloat(document.getElementById('initialInvestment').value) || 0; const target = parseFloat(document.getElementById('targetAmount').value) || 0; const years = parseFloat(document.getElementById('investmentPeriod').value) || 0; const annual = parseFloat(document.getElementById('annualContribution').value) || 0; if (initial <= 0 || target <= 0 || years <= 0) { showNotification('يرجى إدخال معايير استثمار صحيحة', 'error'); return; } // Calculate required return rate const totalInvested = initial + (annual * years); // Use iterative method to find required rate let rate = 0.05; // Initial guess for (let i = 0; i < 100; i++) { const futureValue = initial * Math.pow(1 + rate, years) + annual * (Math.pow(1 + rate, years) - 1) / rate; if (Math.abs(futureValue - target) < 1) break; if (futureValue < target) { rate += 0.001; } else { rate -= 0.001; } } const growth = target - totalInvested; const breakEven = Math.log(initial * 2 / initial) / Math.log(1 + rate); // Display results document.getElementById('requiredReturn').textContent = (rate * 100).toFixed(2) + '%'; document.getElementById('totalInvested').textContent = formatCurrency(totalInvested); document.getElementById('investmentGrowth').textContent = formatCurrency(growth); document.getElementById('breakEvenTime').textContent = breakEven.toFixed(1) + ' years'; document.getElementById('investmentResult').style.display = 'block'; showOTA(); } // NPV Calculator function calculateNPV() { const initial = parseFloat(document.getElementById('npvInitial').value) || 0; const discountRate = parseFloat(document.getElementById('discountRate').value) || 0; const cashFlowsText = document.getElementById('cashFlows').value; if (discountRate <= 0) { showNotification('يرجى إدخال معدل خصم صحيح', 'error'); return; } // Parse cash flows const cashFlows = cashFlowsText.split(',').map(cf => parseFloat(cf.trim())).filter(cf => !isNaN(cf)); if (cashFlows.length === 0) { showNotification('يرجى إدخال تدفقات نقدية صحيحة', 'error'); return; } const rate = discountRate / 100; // Calculate NPV let npv = initial; const discountedCashFlows = []; for (let i = 0; i < cashFlows.length; i++) { const discounted = cashFlows[i] / Math.pow(1 + rate, i + 1); npv += discounted; discountedCashFlows.push(discounted); } // Calculate IRR (approximate) const irr = calculateIRR([initial, ...cashFlows]) * 100; // Calculate payback period let cumulative = initial; let paybackPeriod = 0; for (let i = 0; i < cashFlows.length; i++) { cumulative += cashFlows[i]; if (cumulative >= 0) { paybackPeriod = i + 1; break; } } // Calculate profitability index const presentValueInflows = discountedCashFlows.reduce((sum, cf) => sum + cf, 0); const profitabilityIndex = presentValueInflows / Math.abs(initial); // Investment decision const decision = npv > 0 ? 'Accept (NPV > 0)' : 'Reject (NPV < 0)'; // Display results document.getElementById('npvValue').textContent = formatCurrency(npv); document.getElementById('irrValue').textContent = irr.toFixed(2) + '%'; document.getElementById('paybackPeriod').textContent = paybackPeriod + ' years'; document.getElementById('profitabilityIndex').textContent = profitabilityIndex.toFixed(2); document.getElementById('investmentDecision').textContent = decision; document.getElementById('npvResult').style.display = 'block'; // Generate NPV breakdown generateNPVBreakdown([initial, ...cashFlows], discountedCashFlows, rate); showOTA(); } // Calculate IRR using Newton-Raphson method function calculateIRR(cashFlows) { let rate = 0.1; // Initial guess const tolerance = 1e-8; const maxIterations = 100; for (let i = 0; i < maxIterations; i++) { let npv = 0; let dnpv = 0; for (let j = 0; j < cashFlows.length; j++) { npv += cashFlows[j] / Math.pow(1 + rate, j); if (j > 0) { dnpv -= j * cashFlows[j] / Math.pow(1 + rate, j + 1); } } if (Math.abs(npv) < tolerance) break; if (Math.abs(dnpv) < tolerance) break; rate = rate - npv / dnpv; } return rate; } // Generate NPV Breakdown function generateNPVBreakdown(cashFlows, discountedCashFlows, rate) { const container = document.getElementById('npvData'); let html = `
السنة
التدفق النقدي
معامل الخصم
القيمة الحالية
`; for (let i = 0; i < cashFlows.length; i++) { const discountFactor = 1 / Math.pow(1 + rate, i); const presentValue = i === 0 ? cashFlows[i] : discountedCashFlows[i - 1]; html += `
${i}
${formatCurrency(cashFlows[i])}
${discountFactor.toFixed(4)}
${formatCurrency(presentValue)}
`; } container.innerHTML = html; document.getElementById('npvBreakdown').style.display = 'block'; } // Sample Scenarios function useSample(scenario) { const scenarios = { mortgage: () => { switchTab('loan'); document.querySelector('[onclick="switchTab(\'loan\')"]').click(); document.getElementById('loanAmount').value = 300000; document.getElementById('loanRate').value = 6.5; document.getElementById('loanTerm').value = 30; document.getElementById('paymentFreq').value = 12; }, retirement: () => { switchTab('annuity'); document.querySelector('[onclick="switchTab(\'annuity\')"]').click(); document.getElementById('annuityPayment').value = 1000; document.getElementById('annuityRate').value = 8; document.getElementById('annuityPeriods').value = 300; // 25 years * 12 months document.getElementById('annuityTiming').value = 'ordinary'; }, college: () => { switchTab('basic'); document.querySelector('[onclick="switchTab(\'basic\')"]').click(); setSolveFor('rate'); document.getElementById('presentValue').value = 25000; document.getElementById('futureValue').value = 100000; document.getElementById('payment').value = 0; document.getElementById('periods').value = 18; document.getElementById('interestRate').value = ''; }, carloan: () => { switchTab('loan'); document.querySelector('[onclick="switchTab(\'loan\')"]').click(); document.getElementById('loanAmount').value = 40000; document.getElementById('loanRate').value = 5.5; document.getElementById('loanTerm').value = 5; document.getElementById('paymentFreq').value = 12; }, investment: () => { switchTab('investment'); document.querySelector('[onclick="switchTab(\'investment\')"]').click(); document.getElementById('initialInvestment').value = 50000; document.getElementById('targetAmount').value = 100000; document.getElementById('investmentPeriod').value = 6; document.getElementById('annualContribution').value = 0; }, annuity: () => { switchTab('annuity'); document.querySelector('[onclick="switchTab(\'annuity\')"]').click(); document.getElementById('annuityPayment').value = 50000; document.getElementById('annuityRate').value = 6; document.getElementById('annuityPeriods').value = 240; // 20 years * 12 months document.getElementById('annuityTiming').value = 'ordinary'; } }; if (scenarios[scenario]) { scenarios[scenario](); // Smooth scroll to calculate button setTimeout(() => { const calculateBtn = document.querySelector('.tab-content.active .btn'); if (calculateBtn) { calculateBtn.scrollIntoView({ behavior: 'smooth', block: 'center' }); // Highlight button calculateBtn.style.animation = 'pulse 0.5s ease-in-out'; setTimeout(() => calculateBtn.style.animation = '', 500); } }, 100); } } // Utility Functions function formatCurrency(amount) { return new Intl.NumberFormat('en-US', { style: 'currency', currency: 'دولار أمريكي', minimumFractionDigits: 0, maximumFractionDigits: 0 }).format(Math.abs(amount)); } function showNotification(message, type = 'success') { const toast = document.createElement('div'); toast.className = `toast ${type}`; toast.textContent = message; document.body.appendChild(toast); setTimeout(() => { toast.remove(); }, 3000); } function showOTA() { const otaContainer = document.getElementById('otaContainer'); if (otaContainer && (otaContainer.style.display === 'none' || !otaContainer.style.display)) { otaContainer.style.display = 'block'; setTimeout(() => { const otaHeader = document.querySelector('.ota-header h3'); if (otaHeader) { otaHeader.style.animation = 'pulse 1s ease-in-out'; } }, 100); } } function trackEvent(eventName, data = {}) { if (typeof gtag !== 'undefined') { gtag('event', eventName, { 'event_category': TOOL_CONFIG.category, 'event_label': TOOL_CONFIG.name, ...data }); } } // AI Assistant Functions function openAIModal() { const modal = document.getElementById('aiModal'); modal.classList.add('show'); } function closeAIModal() { const modal = document.getElementById('aiModal'); modal.classList.remove('show'); } function selectAI(aiType) { switch(aiType) { case 'chatgpt': const toolContext = `I need help with Time Value of Money calculations using the WIA Code TVM Calculator. Please help me understand present value, future value, annuities, loan calculations, and investment analysis.`; const chatUrl = `https://chat.openai.com/?q=${encodeURIComponent(toolContext)}`; window.open(chatUrl, '_blank'); closeAIModal(); trackEvent('ai_selection', { ai_type: 'chatgpt' }); break; case 'claude': const claudeContext = `I need help with Time Value of Money calculations using the WIA Code TVM Calculator. Please help me understand present value, future value, annuities, loan calculations, and investment analysis.`; const claudeUrl = `https://claude.ai/chat?q=${encodeURIComponent(claudeContext)}`; window.open(claudeUrl, '_blank'); closeAIModal(); trackEvent('ai_selection', { ai_type: 'claude' }); break; case 'gemini': showNotification('Gemini integration coming soon!', 'warning'); trackEvent('ai_selection', { ai_type: 'gemini' }); break; } } // Event Listeners document.addEventListener('تحميل محتوى الصفحة', function() { // Enter key support for inputs document.querySelectorAll('input[type="number"], input[type="text"]').forEach(input => { input.addEventListener('keypress', function(e) { if (e.key === 'إدخال') { const activeTab = document.querySelector('.tab-content.active'); const calculateBtn = activeTab.querySelector('.btn'); if (calculateBtn) { calculateBtn.click(); } } }); }); // AI button event document.getElementById('aiBtn').addEventListener('click', openAIModal); // Modal outside click close document.getElementById('aiModal').addEventListener('click', function(e) { if (e.target === this) { closeAIModal(); } }); // ESC key to close modal document.addEventListener('keydown', function(e) { if (e.key === 'خروج') { closeAIModal(); } }); updateCurrentYear(); updateToolCount(); }); // Dynamic Tool Count async function updateToolCount() { try { const response = await fetch('/api/tool-count.php'); const data = await response.json(); document.querySelectorAll('.dynamic-tools-count').forEach(el => { el.textContent = `${data.count}+ free online tools in 206 languages. No signup, no fees, just tools that work.`; }); document.querySelectorAll('.dynamic-count').forEach(el => { const prefix = el.getAttribute('data-text') || ''; const suffix = el.getAttribute('data-suffix') || ''; const icon = el.textContent.split(' ')[0] || ''; el.textContent = `${icon} ${prefix} ${data.count}+ ${suffix}`; }); } catch (error) { const fallbackCount = 333; document.querySelectorAll('.dynamic-tools-count').forEach(el => { el.textContent = `${fallbackCount}+ free online tools in 206 languages. No signup, no fees, just tools that work.`; }); document.querySelectorAll('.dynamic-count').forEach(el => { const prefix = el.getAttribute('data-text') || ''; const suffix = el.getAttribute('data-suffix') || ''; const icon = el.textContent.split(' ')[0] || ''; el.textContent = `${icon} ${prefix} ${fallbackCount}+ ${suffix}`; }); } } function updateCurrentYear() { const currentYear = new Date().getFullYear(); document.querySelectorAll('.current-year').forEach(el => { el.textContent = currentYear; }); } // Google Analytics window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-XXXXXXXXX'); trackEvent('page_view', { tool: TOOL_CONFIG.name, category: TOOL_CONFIG.category }); : asset.symbol; document.getElementById('pvLabel').textContent = `Present Value (PV) ${symbol}`; document.getElementById('fvLabel').textContent = `Future Value (FV) ${symbol}`; document.getElementById('pmtLabel').textContent = `Payment (PMT) ${symbol}`; } // Update crypto price display function updatePriceDisplay() { const priceDisplay = document.getElementById('cryptoPriceDisplay'); const priceTitle = document.getElementById('cryptoPriceTitle'); const priceValue = document.getElementById('cryptoPriceValue'); if (currentAssetType === 'دولار أمريكي') { priceDisplay.style.display = 'none'; } else { const asset = CRYPTO_ASSETS[currentAssetType]; priceDisplay.style.display = 'block'; priceTitle.textContent = `${asset.name} Current Price`; priceValue.textContent = `1 ${asset.symbol} = ${asset.currentPrice.toLocaleString()} USD`; } } // Update rate hints based on asset type function updateRateHints() { const asset = CRYPTO_ASSETS[currentAssetType]; const rateHint = document.getElementById('rateHint'); if (currentAssetType === 'دولار أمريكي') { rateHint.textContent = 'Traditional assets: 3-12%, Enter your expected return'; } else { rateHint.textContent = `${asset.name} - Risk: ${asset.riskLevel}, Enter your expected return`; // Clear any auto-filled rate to let user decide const rateField = document.getElementById('interestRate'); if (rateField.value == 8) { rateField.value = ''; } } } // Toggle crypto disclaimer function toggleCryptoDisclaimer() { const disclaimer = document.getElementById('cryptoDisclaimer'); if (currentAssetType === 'دولار أمريكي') { disclaimer.style.display = 'none'; } else { disclaimer.style.display = 'block'; } } // Tab Management function switchTab(tabName) { document.querySelectorAll('.tab-content').forEach(tab => { tab.classList.remove('active'); }); document.querySelectorAll('.tab-button').forEach(btn => { btn.classList.remove('active'); }); document.getElementById(tabName + 'تبويب').classList.add('active'); event.target.classList.add('active'); } // Solve For Selection function setSolveFor(solveType) { document.querySelectorAll('.solve-for-option').forEach(option => { option.classList.remove('active'); }); event.target.classList.add('active'); currentSolveFor = solveType; // Clear the field we're solving for const fieldMap = { 'pv': 'presentValue', 'fv': 'futureValue', 'pmt': 'payment', 'rate': 'interestRate', 'periods': 'periods' }; document.getElementById(fieldMap[solveType]).value = ''; } // Annuity Type Selection function setAnnuityType(type) { document.querySelectorAll('.toggle-button').forEach(btn => { btn.classList.remove('active'); }); event.target.classList.add('active'); currentAnnuityType = type; } // Main TVM Calculation function calculateTVM() { try { const pv = parseFloat(document.getElementById('presentValue').value) || 0; const fv = parseFloat(document.getElementById('futureValue').value) || 0; const pmt = parseFloat(document.getElementById('payment').value) || 0; const rate = parseFloat(document.getElementById('interestRate').value) || 0; const periods = parseFloat(document.getElementById('periods').value) || 0; const compFreq = parseInt(document.getElementById('compoundingFreq').value) || 12; if (rate <= 0 && currentSolveFor !== 'rate') { showNotification('Interest rate must be greater than 0', 'error'); return; } if (periods <= 0 && currentSolveFor !== 'periods') { showNotification('Number of periods must be greater than 0', 'error'); return; } const result = solveTVM(pv, fv, pmt, rate, periods, compFreq, currentSolveFor, currentAnnuityType); displayTVMResult(result); showOTA(); trackEvent('tvm_calculated', { solveFor: currentSolveFor }); } catch (error) { showNotification(`Calculation error: ${error.message}`, 'error'); } } // Core TVM Solver function solveTVM(pv, fv, pmt, rate, periods, compFreq, solveFor, annuityType) { const periodicRate = rate / 100 / compFreq; const totalPeriods = periods * compFreq; let result = {}; switch (solveFor) { case 'pv': result.value = calculatePresentValue(fv, pmt, periodicRate, totalPeriods, annuityType); result.label = 'القيمة الحالية'; break; case 'fv': result.value = calculateFutureValue(pv, pmt, periodicRate, totalPeriods, annuityType); result.label = 'Future Value'; break; case 'pmt': result.value = calculatePayment(pv, fv, periodicRate, totalPeriods, annuityType); result.label = 'مبلغ الدفع'; break; case 'rate': const solvedRate = calculateInterestRate(pv, fv, pmt, totalPeriods, annuityType); result.value = solvedRate * compFreq * 100; result.label = 'معدل الفائدة السنوي'; result.isPercentage = true; break; case 'periods': const solvedPeriods = calculatePeriods(pv, fv, pmt, periodicRate, annuityType); result.value = solvedPeriods / compFreq; result.label = 'عدد الفترات'; result.isYears = true; break; } // Calculate additional details const effectiveRate = Math.pow(1 + periodicRate, compFreq) - 1; const totalPayments = Math.abs(pmt) * totalPeriods; result.effectiveRate = effectiveRate * 100; result.totalPayments = totalPayments; if (solveFor === 'pv') { result.totalInterest = Math.abs(result.value) - Math.abs(fv) + totalPayments; } else if (solveFor === 'fv') { result.totalInterest = Math.abs(result.value) - Math.abs(pv) - totalPayments; } else { result.totalInterest = totalPayments - Math.abs(pv); } return result; } // Present Value Calculation function calculatePresentValue(fv, pmt, rate, periods, type) { let pv = 0; if (fv !== 0) { pv += fv / Math.pow(1 + rate, periods); } if (pmt !== 0 && rate !== 0) { const annuityPV = pmt * (1 - Math.pow(1 + rate, -periods)) / rate; if (type === 'due') { pv += annuityPV * (1 + rate); } else { pv += annuityPV; } } else if (pmt !== 0 && rate === 0) { pv += pmt * periods; } return -pv; // Financial calculator convention } // Future Value Calculation function calculateFutureValue(pv, pmt, rate, periods, type) { let fv = 0; if (pv !== 0) { fv += -pv * Math.pow(1 + rate, periods); } if (pmt !== 0 && rate !== 0) { const annuityFV = pmt * (Math.pow(1 + rate, periods) - 1) / rate; if (type === 'due') { fv += annuityFV * (1 + rate); } else { fv += annuityFV; } } else if (pmt !== 0 && rate === 0) { fv += pmt * periods; } return fv; } // Payment Calculation function calculatePayment(pv, fv, rate, periods, type) { if (rate === 0) { return -(pv + fv) / periods; } const pvFactor = pv * Math.pow(1 + rate, periods); const numerator = -(pvFactor + fv); const denominator = (Math.pow(1 + rate, periods) - 1) / rate; let pmt = numerator / denominator; if (type === 'due') { pmt = pmt / (1 + rate); } return pmt; } // Interest Rate Calculation (Newton-Raphson method) function calculateInterestRate(pv, fv, pmt, periods, type) { if (pv === 0 && pmt === 0) return 0; if (fv === 0 && pmt === 0) return 0; let rate = 0.1; // Initial guess const tolerance = 1e-8; const maxIterations = 100; for (let i = 0; i < maxIterations; i++) { const f = evaluateTVMFunction(pv, fv, pmt, rate, periods, type); const df = evaluateTVMDerivative(pv, fv, pmt, rate, periods, type); if (Math.abs(df) < tolerance) break; const newRate = rate - f / df; if (Math.abs(newRate - rate) < tolerance) { return newRate; } rate = newRate; } return rate; } // TVM Function Evaluation function evaluateTVMFunction(pv, fv, pmt, rate, periods, type) { if (rate === 0) { return pv + fv + pmt * periods; } const pvTerm = pv; const fvTerm = fv / Math.pow(1 + rate, periods); let pmtTerm = 0; if (pmt !== 0) { pmtTerm = pmt * (1 - Math.pow(1 + rate, -periods)) / rate; if (type === 'due') { pmtTerm *= (1 + rate); } } return pvTerm + fvTerm + pmtTerm; } // TVM Derivative Evaluation function evaluateTVMDerivative(pv, fv, pmt, rate, periods, type) { const h = 1e-8; const f1 = evaluateTVMFunction(pv, fv, pmt, rate + h, periods, type); const f2 = evaluateTVMFunction(pv, fv, pmt, rate - h, periods, type); return (f1 - f2) / (2 * h); } // Periods Calculation function calculatePeriods(pv, fv, pmt, rate, type) { if (rate === 0) { return -(pv + fv) / pmt; } // Simplified calculation for common cases if (pmt === 0) { return Math.log(-fv / pv) / Math.log(1 + rate); } // For annuity calculations, use iterative method let periods = 10; // Initial guess const tolerance = 1e-8; const maxIterations = 100; for (let i = 0; i < maxIterations; i++) { const calculatedFV = calculateFutureValue(pv, pmt, rate, periods, type); const error = Math.abs(calculatedFV - fv); if (error < tolerance) break; // Adjust periods based on error if (calculatedFV < fv) { periods += 0.1; } else { periods -= 0.1; } if (periods <= 0) { periods = 0.1; } } return periods; } // Display TVM Results function displayTVMResult(result) { const resultContainer = document.getElementById('tvmResult'); const resultLabel = document.getElementById('resultLabel'); const resultValue = document.getElementById('resultValue'); const effectiveRate = document.getElementById('effectiveRate'); const totalPayments = document.getElementById('totalPayments'); const totalInterest = document.getElementById('totalInterest'); resultLabel.textContent = result.label; if (result.isPercentage) { resultValue.textContent = result.value.toFixed(2) + '%'; } else if (result.isYears) { resultValue.textContent = result.value.toFixed(1) + ' years'; } else { resultValue.textContent = formatCurrency(result.value); } effectiveRate.textContent = result.effectiveRate.toFixed(2) + '%'; totalPayments.textContent = formatCurrency(result.totalPayments); totalInterest.textContent = formatCurrency(result.totalInterest); resultContainer.style.display = 'block'; } // Loan Calculator function calculateLoan() { const principal = parseFloat(document.getElementById('loanAmount').value) || 0; const rate = parseFloat(document.getElementById('loanRate').value) || 0; const years = parseFloat(document.getElementById('loanTerm').value) || 0; const freq = parseInt(document.getElementById('paymentFreq').value) || 12; if (principal <= 0 || rate <= 0 || years <= 0) { showNotification('يرجى إدخال معايير قرض صحيحة', 'error'); return; } const periodicRate = rate / 100 / freq; const totalPayments = years * freq; // Calculate monthly payment using PMT formula const payment = principal * (periodicRate * Math.pow(1 + periodicRate, totalPayments)) / (Math.pow(1 + periodicRate, totalPayments) - 1); const totalOfPayments = payment * totalPayments; const totalInterest = totalOfPayments - principal; const interestPercentage = (totalInterest / principal) * 100; // Display results document.getElementById('loanPayment').textContent = formatCurrency(payment); document.getElementById('totalLoanPayments').textContent = formatCurrency(totalOfPayments); document.getElementById('totalLoanInterest').textContent = formatCurrency(totalInterest); document.getElementById('interestPercentage').textContent = interestPercentage.toFixed(1) + '%'; document.getElementById('loanResult').style.display = 'block'; // Generate amortization table generateAmortizationTable(principal, payment, periodicRate, 12); showOTA(); } // Generate Amortization Table function generateAmortizationTable(principal, payment, periodicRate, numPayments) { const container = document.getElementById('amortizationData'); let balance = principal; let html = `
رقم الدفعة
الدفعة
الفائدة
المبلغ الأساسي
الرصيد
`; for (let i = 1; i <= numPayments; i++) { const interestPayment = balance * periodicRate; const principalPayment = payment - interestPayment; balance -= principalPayment; html += `
${i}
${formatCurrency(payment)}
${formatCurrency(interestPayment)}
${formatCurrency(principalPayment)}
${formatCurrency(balance)}
`; } container.innerHTML = html; document.getElementById('amortizationTable').style.display = 'block'; } // Annuity Calculator function calculateAnnuity() { const payment = parseFloat(document.getElementById('annuityPayment').value) || 0; const rate = parseFloat(document.getElementById('annuityRate').value) || 0; const periods = parseInt(document.getElementById('annuityPeriods').value) || 0; const timing = document.getElementById('annuityTiming').value; if (payment <= 0 || rate <= 0 || periods <= 0) { showNotification('يرجى إدخال معايير أقساط صحيحة', 'error'); return; } const periodicRate = rate / 100 / 12; // Assuming monthly payments // Calculate present value let pv = payment * (1 - Math.pow(1 + periodicRate, -periods)) / periodicRate; // Calculate future value let fv = payment * (Math.pow(1 + periodicRate, periods) - 1) / periodicRate; // Adjust for annuity due if (timing === 'due') { pv *= (1 + periodicRate); fv *= (1 + periodicRate); } const totalPayments = payment * periods; const interestEarned = fv - totalPayments; const effectiveRate = Math.pow(1 + periodicRate, 12) - 1; // Display results document.getElementById('annuityPV').textContent = formatCurrency(pv); document.getElementById('annuityFV').textContent = formatCurrency(fv); document.getElementById('totalAnnuityPayments').textContent = formatCurrency(totalPayments); document.getElementById('annuityInterest').textContent = formatCurrency(interestEarned); document.getElementById('annuityEffectiveRate').textContent = (effectiveRate * 100).toFixed(2) + '%'; document.getElementById('annuityResult').style.display = 'block'; showOTA(); } // Investment Analysis function calculateInvestment() { const initial = parseFloat(document.getElementById('initialInvestment').value) || 0; const target = parseFloat(document.getElementById('targetAmount').value) || 0; const years = parseFloat(document.getElementById('investmentPeriod').value) || 0; const annual = parseFloat(document.getElementById('annualContribution').value) || 0; if (initial <= 0 || target <= 0 || years <= 0) { showNotification('يرجى إدخال معايير استثمار صحيحة', 'error'); return; } // Calculate required return rate const totalInvested = initial + (annual * years); // Use iterative method to find required rate let rate = 0.05; // Initial guess for (let i = 0; i < 100; i++) { const futureValue = initial * Math.pow(1 + rate, years) + annual * (Math.pow(1 + rate, years) - 1) / rate; if (Math.abs(futureValue - target) < 1) break; if (futureValue < target) { rate += 0.001; } else { rate -= 0.001; } } const growth = target - totalInvested; const breakEven = Math.log(initial * 2 / initial) / Math.log(1 + rate); // Display results document.getElementById('requiredReturn').textContent = (rate * 100).toFixed(2) + '%'; document.getElementById('totalInvested').textContent = formatCurrency(totalInvested); document.getElementById('investmentGrowth').textContent = formatCurrency(growth); document.getElementById('breakEvenTime').textContent = breakEven.toFixed(1) + ' years'; document.getElementById('investmentResult').style.display = 'block'; showOTA(); } // NPV Calculator function calculateNPV() { const initial = parseFloat(document.getElementById('npvInitial').value) || 0; const discountRate = parseFloat(document.getElementById('discountRate').value) || 0; const cashFlowsText = document.getElementById('cashFlows').value; if (discountRate <= 0) { showNotification('يرجى إدخال معدل خصم صحيح', 'error'); return; } // Parse cash flows const cashFlows = cashFlowsText.split(',').map(cf => parseFloat(cf.trim())).filter(cf => !isNaN(cf)); if (cashFlows.length === 0) { showNotification('يرجى إدخال تدفقات نقدية صحيحة', 'error'); return; } const rate = discountRate / 100; // Calculate NPV let npv = initial; const discountedCashFlows = []; for (let i = 0; i < cashFlows.length; i++) { const discounted = cashFlows[i] / Math.pow(1 + rate, i + 1); npv += discounted; discountedCashFlows.push(discounted); } // Calculate IRR (approximate) const irr = calculateIRR([initial, ...cashFlows]) * 100; // Calculate payback period let cumulative = initial; let paybackPeriod = 0; for (let i = 0; i < cashFlows.length; i++) { cumulative += cashFlows[i]; if (cumulative >= 0) { paybackPeriod = i + 1; break; } } // Calculate profitability index const presentValueInflows = discountedCashFlows.reduce((sum, cf) => sum + cf, 0); const profitabilityIndex = presentValueInflows / Math.abs(initial); // Investment decision const decision = npv > 0 ? 'Accept (NPV > 0)' : 'Reject (NPV < 0)'; // Display results document.getElementById('npvValue').textContent = formatCurrency(npv); document.getElementById('irrValue').textContent = irr.toFixed(2) + '%'; document.getElementById('paybackPeriod').textContent = paybackPeriod + ' years'; document.getElementById('profitabilityIndex').textContent = profitabilityIndex.toFixed(2); document.getElementById('investmentDecision').textContent = decision; document.getElementById('npvResult').style.display = 'block'; // Generate NPV breakdown generateNPVBreakdown([initial, ...cashFlows], discountedCashFlows, rate); showOTA(); } // Calculate IRR using Newton-Raphson method function calculateIRR(cashFlows) { let rate = 0.1; // Initial guess const tolerance = 1e-8; const maxIterations = 100; for (let i = 0; i < maxIterations; i++) { let npv = 0; let dnpv = 0; for (let j = 0; j < cashFlows.length; j++) { npv += cashFlows[j] / Math.pow(1 + rate, j); if (j > 0) { dnpv -= j * cashFlows[j] / Math.pow(1 + rate, j + 1); } } if (Math.abs(npv) < tolerance) break; if (Math.abs(dnpv) < tolerance) break; rate = rate - npv / dnpv; } return rate; } // Generate NPV Breakdown function generateNPVBreakdown(cashFlows, discountedCashFlows, rate) { const container = document.getElementById('npvData'); let html = `
السنة
التدفق النقدي
معامل الخصم
القيمة الحالية
`; for (let i = 0; i < cashFlows.length; i++) { const discountFactor = 1 / Math.pow(1 + rate, i); const presentValue = i === 0 ? cashFlows[i] : discountedCashFlows[i - 1]; html += `
${i}
${formatCurrency(cashFlows[i])}
${discountFactor.toFixed(4)}
${formatCurrency(presentValue)}
`; } container.innerHTML = html; document.getElementById('npvBreakdown').style.display = 'block'; } // Sample Scenarios function useSample(scenario) { const scenarios = { mortgage: () => { switchTab('loan'); document.querySelector('[onclick="switchTab(\'loan\')"]').click(); document.getElementById('loanAmount').value = 300000; document.getElementById('loanRate').value = 6.5; document.getElementById('loanTerm').value = 30; document.getElementById('paymentFreq').value = 12; }, retirement: () => { switchTab('annuity'); document.querySelector('[onclick="switchTab(\'annuity\')"]').click(); document.getElementById('annuityPayment').value = 1000; document.getElementById('annuityRate').value = 8; document.getElementById('annuityPeriods').value = 300; // 25 years * 12 months document.getElementById('annuityTiming').value = 'ordinary'; }, college: () => { switchTab('basic'); document.querySelector('[onclick="switchTab(\'basic\')"]').click(); setSolveFor('rate'); document.getElementById('presentValue').value = 25000; document.getElementById('futureValue').value = 100000; document.getElementById('payment').value = 0; document.getElementById('periods').value = 18; document.getElementById('interestRate').value = ''; }, carloan: () => { switchTab('loan'); document.querySelector('[onclick="switchTab(\'loan\')"]').click(); document.getElementById('loanAmount').value = 40000; document.getElementById('loanRate').value = 5.5; document.getElementById('loanTerm').value = 5; document.getElementById('paymentFreq').value = 12; }, investment: () => { switchTab('investment'); document.querySelector('[onclick="switchTab(\'investment\')"]').click(); document.getElementById('initialInvestment').value = 50000; document.getElementById('targetAmount').value = 100000; document.getElementById('investmentPeriod').value = 6; document.getElementById('annualContribution').value = 0; }, annuity: () => { switchTab('annuity'); document.querySelector('[onclick="switchTab(\'annuity\')"]').click(); document.getElementById('annuityPayment').value = 50000; document.getElementById('annuityRate').value = 6; document.getElementById('annuityPeriods').value = 240; // 20 years * 12 months document.getElementById('annuityTiming').value = 'ordinary'; } }; if (scenarios[scenario]) { scenarios[scenario](); // Smooth scroll to calculate button setTimeout(() => { const calculateBtn = document.querySelector('.tab-content.active .btn'); if (calculateBtn) { calculateBtn.scrollIntoView({ behavior: 'smooth', block: 'center' }); // Highlight button calculateBtn.style.animation = 'pulse 0.5s ease-in-out'; setTimeout(() => calculateBtn.style.animation = '', 500); } }, 100); } } // Utility Functions function formatCurrency(amount) { return new Intl.NumberFormat('en-US', { style: 'currency', currency: 'دولار أمريكي', minimumFractionDigits: 0, maximumFractionDigits: 0 }).format(Math.abs(amount)); } function showNotification(message, type = 'success') { const toast = document.createElement('div'); toast.className = `toast ${type}`; toast.textContent = message; document.body.appendChild(toast); setTimeout(() => { toast.remove(); }, 3000); } function showOTA() { const otaContainer = document.getElementById('otaContainer'); if (otaContainer && (otaContainer.style.display === 'none' || !otaContainer.style.display)) { otaContainer.style.display = 'block'; setTimeout(() => { const otaHeader = document.querySelector('.ota-header h3'); if (otaHeader) { otaHeader.style.animation = 'pulse 1s ease-in-out'; } }, 100); } } function trackEvent(eventName, data = {}) { if (typeof gtag !== 'undefined') { gtag('event', eventName, { 'event_category': TOOL_CONFIG.category, 'event_label': TOOL_CONFIG.name, ...data }); } } // AI Assistant Functions function openAIModal() { const modal = document.getElementById('aiModal'); modal.classList.add('show'); } function closeAIModal() { const modal = document.getElementById('aiModal'); modal.classList.remove('show'); } function selectAI(aiType) { switch(aiType) { case 'chatgpt': const toolContext = `I need help with Time Value of Money calculations using the WIA Code TVM Calculator. Please help me understand present value, future value, annuities, loan calculations, and investment analysis.`; const chatUrl = `https://chat.openai.com/?q=${encodeURIComponent(toolContext)}`; window.open(chatUrl, '_blank'); closeAIModal(); trackEvent('ai_selection', { ai_type: 'chatgpt' }); break; case 'claude': const claudeContext = `I need help with Time Value of Money calculations using the WIA Code TVM Calculator. Please help me understand present value, future value, annuities, loan calculations, and investment analysis.`; const claudeUrl = `https://claude.ai/chat?q=${encodeURIComponent(claudeContext)}`; window.open(claudeUrl, '_blank'); closeAIModal(); trackEvent('ai_selection', { ai_type: 'claude' }); break; case 'gemini': showNotification('Gemini integration coming soon!', 'warning'); trackEvent('ai_selection', { ai_type: 'gemini' }); break; } } // Event Listeners document.addEventListener('تحميل محتوى الصفحة', function() { // Enter key support for inputs document.querySelectorAll('input[type="number"], input[type="text"]').forEach(input => { input.addEventListener('keypress', function(e) { if (e.key === 'إدخال') { const activeTab = document.querySelector('.tab-content.active'); const calculateBtn = activeTab.querySelector('.btn'); if (calculateBtn) { calculateBtn.click(); } } }); }); // AI button event document.getElementById('aiBtn').addEventListener('click', openAIModal); // Modal outside click close document.getElementById('aiModal').addEventListener('click', function(e) { if (e.target === this) { closeAIModal(); } }); // ESC key to close modal document.addEventListener('keydown', function(e) { if (e.key === 'خروج') { closeAIModal(); } }); updateCurrentYear(); updateToolCount(); }); // Dynamic Tool Count async function updateToolCount() { try { const response = await fetch('/api/tool-count.php'); const data = await response.json(); document.querySelectorAll('.dynamic-tools-count').forEach(el => { el.textContent = `${data.count}+ free online tools in 206 languages. No signup, no fees, just tools that work.`; }); document.querySelectorAll('.dynamic-count').forEach(el => { const prefix = el.getAttribute('data-text') || ''; const suffix = el.getAttribute('data-suffix') || ''; const icon = el.textContent.split(' ')[0] || ''; el.textContent = `${icon} ${prefix} ${data.count}+ ${suffix}`; }); } catch (error) { const fallbackCount = 333; document.querySelectorAll('.dynamic-tools-count').forEach(el => { el.textContent = `${fallbackCount}+ free online tools in 206 languages. No signup, no fees, just tools that work.`; }); document.querySelectorAll('.dynamic-count').forEach(el => { const prefix = el.getAttribute('data-text') || ''; const suffix = el.getAttribute('data-suffix') || ''; const icon = el.textContent.split(' ')[0] || ''; el.textContent = `${icon} ${prefix} ${fallbackCount}+ ${suffix}`; }); } } function updateCurrentYear() { const currentYear = new Date().getFullYear(); document.querySelectorAll('.current-year').forEach(el => { el.textContent = currentYear; }); } // Google Analytics window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-XXXXXXXXX'); trackEvent('page_view', { tool: TOOL_CONFIG.name, category: TOOL_CONFIG.category });