Exchange Rate Forecasting Model
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`; document.body.appendChild(messageBox); } // Ensure all JavaScript code executes after the DOM is fully loaded. document.addEventListener('DOMContentLoaded', function() { // --- DOM Element References --- const currencyPairSelect = document.getElementById('currencyPairSelect'); const historicalPeriodSelect = document.getElementById('historicalPeriodSelect'); const forecastPeriodInput = document.getElementById('forecastPeriodInput'); const maPeriodInput = document.getElementById('maPeriodInput'); const generateForecastBtn = document.getElementById('generateForecastBtn'); const downloadPdfBtn = document.getElementById('downloadPdfBtn'); const resultsSection = document.getElementById('resultsSection'); const displayHistoricalPeriod = document.getElementById('displayHistoricalPeriod'); const displayForecastPeriod = document.getElementById('displayForecastPeriod'); const forecastSummary = document.getElementById('forecastSummary'); const resultCurrencyPair = document.getElementById('resultCurrencyPair'); const buttonText = document.getElementById('buttonText'); const loader = document.getElementById('loader'); const forecastingChartCanvas = document.getElementById('forecastingChart'); let currentChart = null; // To hold the Chart.js instance // --- Mock Data Generation --- // Generates plausible, but random, historical closing prices for a given period. // This is for demonstration purposes as real-time/historical data APIs are not integrated directly. function generateMockHistoricalData(days) { const data = []; let lastClose = Math.random() * (1.2 - 0.8) + 0.8; // Starting price for EUR/USD like range for (let i = days - 1; i >= 0; i--) { const date = new Date(); date.setDate(date.getDate() - i); const formattedDate = formatDate(date); // Use the globally available formatDate const open = lastClose + (Math.random() - 0.5) * 0.005; const close = open + (Math.random() - 0.5) * 0.01; // Ensure prices are positive and somewhat realistic for forex lastClose = Math.max(0.0001, parseFloat(close.toFixed(5))); data.push({ date: formattedDate, close: lastClose }); } return data; } // --- Forecasting Logic (Simplified Trend Extrapolation based on Moving Average) --- /** * Calculates a Simple Moving Average (SMA). * @param {Array