我正在嘗試解決一個作業問題，該問題要求我計算抵押貸款的付款，但是當我輸入抵押金額時，例如：500000 和 30 年的期限，它直到 0 才會更新每月付款。將顯示攤銷計劃的 javaScript 應用程序。應用程序將提示用戶輸入貸款金額（無逗號）。應用程序將提示用戶輸入術語年（30 或 15）。將計算并顯示每月支付 5.75% 的利息。提示：您可以修改上周的抵押貸款申請。將利率設置為 0.0575計算每月付款的公式是 (((I / 12) * P)  / (1-(Math.pow (1+ (I / 12), (Y * -12))))).toFixed(2);I = 利率P = 貸款本金（貸款金額）Y = 任期年總利息金額的公式是 monthly payment x term Months - loan amount總貸款的公式是 loan amount +  total interest按揭貸款余額的公式是 total loan - monthly payment使用 for 循環顯示付款和余額使用 if 語句打印“Ending....”使用.toFixed(2)轉換一個號碼只保留兩位小數var I = 0.0575;var LoanAmount = parseFloat(prompt("Enter the loan amount:",0));var NumOfYears = parseInt(prompt("Enter the term years:",0));var MortgageLoanBalance;//var TermMonth = ;var MonthlyPayment;MonthlyPayment = (((I / 12) * LoanAmount) / (1- (Math.pow (1 + (I / 12), (NumOfYears * -12))))).toFixed(2);var TotalInterestAmount = MonthlyPayment * (NumOfYears * 12) - LoanAmount;var TotalLoan = LoanAmount + TotalInterestAmount;MortgageLoanBalance = TotalLoan - MonthlyPayment;//alert(MortgageLoanBalance);if (MortgageLoanBalance > 0 ) {    document.write("Your " + NumOfYears + " year mortgage amount is " + MonthlyPayment + " per month." );//else if (MortgageLoanBalance > 0)     document.write(TotalInterestAmount);    document.write(TotalLoan);    document.write(MortgageLoanBalance);    for (i = 0; i <= MonthlyPayment; i++) {        document.write("Month " + i + ": Your Monthly Payment " + MonthlyPayment + " and Mortgage loan balance " + MortgageLoanBalance + "<br>");    }} else {    document.write("You have no payments");    //document.write("I don't know what you did.")}它應該打印出 5 個輸出：按年按揭 貸款利率按揭金額總利息金額總按揭金額我沒有收到任何錯誤消息，但它沒有更新任何每月付款，而且看起來一團糟