js 千分位 内容显示

 Number.prototype.toThousands = function(){

    	var num = this.valueOf();

    	if(num == 0 ) return 0;

    	//return (parseFloat(num)).toFixed(0).replace(/\d{1,3}(?=(\d{3})+$)/g, '$&,');

    	var res=num.toString().replace(/\d+/, function(n){ // 先提取整数部分

    	       return n.replace(/(\d)(?=(\d{3})+$)/g,function($1){

    	          return $1+",";

    	        });

    	  })

    	 return res;

    }