js工具整理

/*
 * formatMoney(s,type)
 * 功能：金额按千位逗号分割
 * 参数：s，需要格式化的金额数值.
 * 参数：type,判断格式化后的金额是否需要小数位.
 * 返回：返回格式化后的数值字符串.
 */
function formatMoney(s, type) {
	if (/[^0-9\.]/.test(s))
		return "0";
	if (s == null || s == "")
		return "0";
	s = s.toString().replace(/^(\d*)$/, "$1.");
	s = (s + "00").replace(/(\d*\.\d\d)\d*/, "$1");
	s = s.replace(".", ",");
	var re = /(\d)(\d{3},)/;
	while (re.test(s))
		s = s.replace(re, "$1,$2");
	s = s.replace(/,(\d\d)$/, ".$1");
	if (type == 0) {// 不带小数位(默认是有小数位)
		var a = s.split(".");
		if (a[1] == "00") {
			s = a[0];
		}
	}
	return s;
}