如何使用jQuery使用逗号增加数字？

我正在尝试在页面上的一个元素内增加一个数字.但是,我需要的数字包括千分之一个值的逗号. (例如45,000不是45000)

<script>
// Animate the element's value from x to y:
  $({someValue: 40000}).animate({someValue: 45000},{
      duration: 3000,easing:'swing',// can be anything
      step: function() { // called on every step
          // Update the element's text with rounded-up value:
          $('#el').text(Math.round(this.someValue));
      }
  });
</script>
<div id="el"></div>

如何用逗号加一个数字？

解决方法

工作演示 http://jsfiddle.net/4v2wK/

随意更改更多的需要,你也可以看货币格式化,希望这将适合你的需要:)

码

// Animate the element's value from x to y:
  var $el = $("#el"); //[make sure this is a unique variable name]
  $({someValue: 40000}).animate({someValue: 45000},// can be anything
      step: function() { // called on every step
          // Update the element's text with rounded-up value:
          $el.text(commaSeparateNumber(Math.round(this.someValue)));
      }
  });

 function commaSeparateNumber(val){
    while (/(\d+)(\d{3})/.test(val.toString())){
      val = val.toString().replace(/(\d)(?=(\d\d\d)+(?!\d))/g,"$1,");
    }
    return val;
  }

**输出*