JavaScript数字格式化与单位添加实现

完整代码示例

<!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=utf-8" />
<title>数字格式化</title>
<script type="text/javascript" language="javascript" >
//n为要转化的数字/数字字符串，s为后面要加的单位，可为空
function num2money(n, s){ 
  if (typeof s == "undefined") 
    s = "";
  n = parseInt(n);
  n = parseInt(n) + Number(((n - parseInt(n)) + "").substring(0, 3));
  if (n / 1000 >= 1) {
    var nn = '' + n;
    nn = nn.substring(nn.length - 3, nn.length);
    s = ',' + nn + s;
    return num2money(parseInt(n / 1000), s);
  }
  else {
    return n + s;
  }
}
document.write(num2money("123.45", "美元"));//输出：123美元
</script>
</head>
<body>
</body>
</html>