Question

我正在使用以下脚本以一定间隔向上计数，它完美无缺。但是，我希望用逗号（56,181,995而不是56181995）格式化数字。

var START_DATE = new Date("July 27, 2010 13:30:00"); // put in the starting date here
var INTERVAL = 1; // in seconds
var INCREMENT = 2; // increase per tick
var START_VALUE = 101; // initial value when it's the start date
var count = 0;

window.onload = function()
{
var msInterval = INTERVAL * 1000;
var now = new Date();
count = parseInt((now - START_DATE)/msInterval) * INCREMENT + START_VALUE;
document.getElementById('counter').innerHTML = count;
setInterval("count += INCREMENT; document.getElementById('counter').innerHTML = count;", msInterval);
}

我以为我在这里找到了答案，但我无法让它起作用：

How to print a number with commas as thousands separators in JavaScript

Answer 1

(1234567890).toLocaleString();

Answer 2

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

http://www.mredkj.com/javascript/nfbasic.html

要整合：

var msInterval = INTERVAL * 1000;
var now = new Date();
count = parseInt((now - START_DATE)/msInterval) * INCREMENT + START_VALUE;
document.getElementById('counter').innerHTML = addCommas(count);
setInterval("count += INCREMENT; document.getElementById('counter').innerHTML = addCommas(count);", msInterval);

Answer 3

formatting - How can I format numbers as money in JavaScript?

使用此SO帖子格式化金钱作为基础，您可以重新设计此工作以进行逗号分离

这是一个例子 - http://jsfiddle.net/pxfunc/etfjW/

您可以扩展javascript Number类型以包含commaSeparated格式化程序方法，如下所示：

Number.prototype.commaSeparated = function() {
    var n = this,
        t = ",",
        s = n < 0 ? "-" : "",
        i = parseInt(n = Math.abs(+n || 0)) + "",
        j = (j = i.length) > 3 ? j % 3 : 0;
    return s + (j ? i.substr(0, j) + t : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + t);
};

然后像这样称呼它

count.commaSeparated();

或

(1234567890).commaSeparated();

Answer 4

function addCommas(str){
   var arr,int,dec;
   str += '';

   arr = str.split('.');
   int = arr[0] + '';
   dec = arr.length>1?'.'+arr[1]:'';

   return int.replace(/(\d)(?=(\d{3})+$)/g,"$1,") + dec;
}

将逗号添加到JavaScript输出

4 个答案: