js金额数字格式化实现代码(加减逗号处理)_javascript技巧

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:

在线运行：

<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> <input type="text" maxlength="8" id="test" onblur="this.value=outputmoney(this.value);">
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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: