js金额数字格式化实现代码(加减逗号处理)

网络编程 2024/11/13 佚名

3 2 1

例1，使数字1111111变成11,111,111.00，保留两位小数。

复制代码代码如下:
<html>
<head>
<script type="text/javascript">
function outputmoney(number) {
number = number.replace(/\,/g, "");
if(isNaN(number) || number == "")return "";
number = Math.round(number * 100) / 100;
    if (number < 0)
        return '-' + outputdollars(Math.floor(Math.abs(number) - 0) + '') + outputcents(Math.abs(number) - 0);
    else
        return outputdollars(Math.floor(number - 0) + '') + outputcents(number - 0);
}
//格式化金额
function outputdollars(number) {
    if (number.length <= 3)
        return (number == '' ? '0' : number);
    else {
        var mod = number.length % 3;
        var output = (mod == 0 ? '' : (number.substring(0, mod)));
        for (i = 0; i < Math.floor(number.length / 3); i++) {
            if ((mod == 0) && (i == 0))
                output += number.substring(mod + 3 * i, mod + 3 * i + 3);
            else
                output += ',' + number.substring(mod + 3 * i, mod + 3 * i + 3);
        }
        return (output);
    }
}
function outputcents(amount) {
    amount = Math.round(((amount) - Math.floor(amount)) * 100);
    return (amount < 10 ? '.0' + amount : '.' + amount);
}
</script>
</head>
<body>
<input type=text   maxlength="8" id="test" onblur="this.value=outputmoney(this.value);" >
</body>
</html>

在线运行：

<html> <head> </head> <body> <input type=text maxlength="8" id="test" onblur="this.value=outputmoney(this.value);" > </body> </html>
[Ctrl+A 全选注:引入外部Js需再刷新一下页面才能执行]

例2，使数字1111111变成11,111,111---和使11,111,111变成1111111---整数--

复制代码代码如下:
<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=gb2312" />
<title>js 格式化金额的代码---www.jb51.net</title>
<script language="javascript">
function tran(id)
{
var v, j, sj, rv = "";
v = id.value.replace(/,/g,"").split(".");
j = v[0].length % 3;
sj = v[0].substr(j).toString();
for (var i = 0; i < sj.length; i++)
{
rv = (i % 3 == 0) ? rv + "," + sj.substr(i, 1): rv + sj.substr(i, 1);
}
var rvalue = (v[1] == undefined) ? v[0].substr(0, j) + rv: v[0].substr(0, j) + rv + "." + v[1];
if (rvalue.charCodeAt(0) == 44)
{
rvalue = rvalue.substr(1);
}
id.value = rvalue;
}
function tran2(id)
{
var v;
v = id.value.replace(/,/g,"");
alert(v);
}
</script>
<style type="text/css">

</style></head>
<body>
<input name="tt" type="text" id="tt" size="80" onkeyup="tran(this)" />
<br/>
<input name="tt" type="text" id="tt2" size="80" onkeyup="tran2(this)" />
</body>
</html>

运行测试：
<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="content-type" content="text/html; charset=gb2312" /><title>js 格式化金额的代码---www.jb51.net</title><style type="text/css"></style></head><body><input name="tt" type="text" id="tt" size="80" onkeyup="tran(this)" /><input name="tt" type="text" id="tt2" size="80" onkeyup="tran2(this)" /></body></html>
[Ctrl+A 全选注:引入外部Js需再刷新一下页面才能执行]