金额：放入数值，返回格式：0.00元

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前辈代码转载地址: http://1358440610-qq-com.iteye.com/blog/2068289

/*** 将数值四舍五入(保留2位小数)后格式化成金额形式** @param num 数值(Number或者String)* @return 金额格式的字符串,如'1,234,567.45'* @type String*/
function formatCurrency(num) {num = num.toString().replace(/\$|\,/g,'');if(isNaN(num))num = "0";sign = (num == (num = Math.abs(num)));num = Math.floor(num*100+0.50000000001);cents = num%100;num = Math.floor(num/100).toString();if(cents<10)cents = "0" + cents;for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)num = num.substring(0,num.length-(4*i+3))+','+num.substring(num.length-(4*i+3));return (((sign)?'':'-') + num + '.' + cents);
}/*** 将数值四舍五入(保留1位小数)后格式化成金额形式** @param num 数值(Number或者String)* @return 金额格式的字符串,如'1,234,567.4'* @type String*/
function formatCurrencyTenThou(num) {num = num.toString().replace(/\$|\,/g,'');if(isNaN(num))num = "0";sign = (num == (num = Math.abs(num)));num = Math.floor(num*10+0.50000000001);cents = num%10;num = Math.floor(num/10).toString();for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)num = num.substring(0,num.length-(4*i+3))+','+num.substring(num.length-(4*i+3));return (((sign)?'':'-') + num + '.' + cents);
}

———-js小白代码(Φ皿Φ)↓

/** 金额：放入数值，返回格式：0.00元
------------------**/
function moneyFormat(value){if (value == null || value == 0 || value == undefined || value == "&#160;") {//如果是空return '0.00元';}else{var result = (value.toString()).indexOf(".");if(result != -1) {//带小数点if (value.toString().substring(result,value.length).length >= 3) {//如果小数点到末尾的长度大于等于3if (typeof value == 'string') {//因为toFixed只对Number起作用，所以，如果当前的值是string类型，则转为numberreturn parseInt(value).toFixed(2)+'元';  }return value.toFixed(2)+'元'; //截取小数点后两位}else{return value+'0元';}return value+'元';} else {//不带小数点return value+'.00元';}return value+'元';}
}