[英]excel formula to javascript function
这是我拥有的Excel公式
fx = ROUNDUP(C17/((1-(1/(1+(C19/12))^(C18*12)))/(C19/12)),0)
这是我写的javascript函数:
function refreshRenoLoanCalculator() {
var amt = parseInt($('.calc-renoloan .principal-amount').val().replace(/,/g, ''), 10)
console.log(amt); //10 000
var rate = $('.calc-renoloan .loan-rate').val();
console.log(rate); //0.0444
var tenure = $('.calc-renoloan .loan-tenure').val();
console.log(tenure); // 5
var a = rate / 100. / 12.;
console.log(a);
var b = 1. + a;
b = Math.pow(b, (tenure * 12)) - 1.;
console.log(b);
var FC = a / b + a;
FC = FC.toFixed(10);
console.log(FC);
var RP = amt * FC;
console.log(RP);
toolsSetCalculatedValue('.calc-renoloan .calc-result-installment', Math.ceil(RP).toLocaleString().split('.')[0])
$('.calc-renoloan .results-container').slideDown();
}
目前,我从excel公式和javascript函数得到的结果是不相同的。 任何帮助将不胜感激。
在JS中,等效的计算方式如下:
var C17 = 10000; var C18 = 5; var C19 = 4.44; var interest = C19 / 1200; var foo = Math.ceil(C17 * interest / (1 - (Math.pow(1/(1 + interest), C18 * 12)))); console.log(foo);
主要区别是利率的乘积( * 1200
,而不是* 12
),因为Excel将百分比值存储为介于0
和1
之间的浮点数。
如果您希望以与Excel相同的方式进行计算,则需要将输入速率转换为此:
var C17 = 10000; var C18 = 5; var C19 = 0.0444; // Note the difference here var interest = C19 / 12; // and here var foo = Math.ceil(C17 * interest / (1 - (Math.pow(1 / (1 + interest), C18 * 12)))); console.log(foo);
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