JavaScript如何显示数字

Question

我在 JavaScript 函数中计算了一个数字。

示例:

var price = 1000;
var commission = 200;

var total = price + commission

添加这两个之后，我想将总数显示为 1,200(将 , 放在 3 位数字之间)。

Answer 1

来自:http://www.mredkj.com/javascript/numberFormat.html

This functionality is not built into JavaScript, so custom code needs to be used. The following is one way of adding commas to a number, and returning a string.

function addCommas(nStr)
{
    nStr += '';
    x = nStr.split('.');
    x1 = x[0];
    x2 = x.length > 1 ? '.' + x[1] : '';
    var rgx = /(\d+)(\d{3})/;
    while (rgx.test(x1)) {
        x1 = x1.replace(rgx, '$1' + ',' + '$2');
    }
    return x1 + x2;
}