jquery 金钱格式化

(function($){
    $.extend({
        doFormatMoney : function(money) {
			var number = parseFloat(money && String(money).replace(/[^\d|.]/g, ''));
	        if(!number || number < 0 || isNaN(number)){
	            return 0;
	        }
	        var numLength = 0;
	        if (number.toString().indexOf(".") != -1) {
	            numLength =$.lengthOfStringBefore(number, ".");
	        } else {
	            numLength = number.toString().length
	        }
	        if (numLength == 0) {
	            numLength = number.toString().length
	        }
	        var numTemp = "";
	        var len = numLength;
	        var strTemp = "";
	        for (var i = numLength; i > 2; i -= 3) {
	            strTemp = "," + number.toString().substring(len - 3, len);
	            numTemp = strTemp + numTemp;
	            len -= 3;
	        }
	        number = number.toString().substring(0, len) + numTemp +
	            number.toString().substring(numLength, number.toString().length);
	        if ($.indexOfFirst(number, ",")) {
	            number = wipeFirst(number);
	        }
	        return number;
		},
		lengthOfStringBefore : function(character, sign) {
			for (var i = character.toString().length; i > -1; i--) {
				if (character.toString()[i] == sign) {
					return i;
				}
			}
			return character.toString().length;
		},
		indexOfFirst : function(character, sign) {
			return sign == character.toString().substring(0, 1);
		},
		wipeFirst : function(character) {
			return character.toString().substring(1, character.length);
		},
    });
})(jQuery);