如何计算javascript中的抵押贷款

问题描述

我有四个字段查找每月付款的公式

I have formula for finding monthly payment with four fields

1. 贷款金额


2. 利率


3. 贷款条款


4. 每月付款

1. Loan Amount
2. Interest Rate
3. Terms of loan
4. Monthly Payment

公式：每月付款=贷款金额*（（1 + +每年利率/ 100）^贷款期限）/贷款期限/ 12

现在我想找到

1. 贷款金额


2. 利率


3. 贷款条件

如果填写了三个字段中的任何一个。

if any of three fields are populated.

我还有根据利率，贷款条件和每月付款计算贷款金额的公式。

I have also formula for calculating loan amount based on interest rate, terms of loan and monthly payment.

Formula: Loan amount = Monthly Payment/ ((1 + Interest rate per annum/100) ^ Term of loan) * Term of loan * 12

但它没有计算完美的数字。

But it does not calculating perfect figure.

任何人都可以给我这三个计算贷款金额/利息的公式loa的费率/条款n（将更感谢java脚本）

Any one can give me these three formulas for calculating loan amount/interest rate/terms of loan (java script will be more appreciated)

推荐答案

这是我的，

公式：

M = P [ i(1 + i)^n ] / [ (1 + i)^n – 1]

Hope这有点帮助

var M; //monthly mortgage payment
var P = 400000; //principle / initial amount borrowed
var I = 3.5 / 100 / 12; //monthly interest rate
var N = 30 * 12; //number of payments months

//monthly mortgage payment
M = monthlyPayment(P, N, I);

console.log(M);

function monthlyPayment(p, n, i) {
  return p * i * (Math.pow(1 + i, n)) / (Math.pow(1 + i, n) - 1);
}

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