第一種：

$.extend({
        calAjaxLoadTime: function() {
            var ajaxTime2 = (new Date).getTime();
            $("#loadTime").text((ajaxTime2 - ajaxTime1) + "ms");
            return (ajaxTime2 - ajaxTime1) + "ms";
        },
        parameterFromJsonToUrl: function(arg) {
            var paramURL = "引數：";
            for (var item in arg) {
                paramURL += (item + "=" + arg[item] + "&");
            }
            return paramURL.substring(0,paramURL.length-1);
        }
    });
 

//將Date型format成("yyyy年MM月dd日hh小時mm分ss秒");
    Date.prototype.format = function(format) {
        /*
         * eg:format="YYYY-MM-dd hh:mm:ss";
         使用方法:
         var testDate = new Date();
         var testStr = testDate.format("yyyy年MM月dd日hh小時mm分ss秒");
         alert(testStr);
         */
        var o = {
            "M+": this.getMonth() + 1,  //month
            "d+": this.getDate(),     //day
            "h+": this.getHours(),    //hour
            "m+": this.getMinutes(),  //minute
            "s+": this.getSeconds(), //second
            "q+": Math.floor((this.getMonth() + 3) / 3),  //quarter
            "S": this.getMilliseconds() //millisecond
        };

        if (/(y+)/.test(format)) {
            format = format.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
        }

        for (var k in o) {
            if (new RegExp("(" + k + ")").test(format)) {
                format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length));
            }
        }
        return format;
    };