純手寫的 javascript 萬年曆控件，複製代碼就可以用

    (function () {
        var css0="width:210px;height:242px;border:1px solid red;";
        var css1="width:210px;height:30px;border-bottom:1px solid red;";
        var css2="width:210px;height:30px;border-bottom:1px solid red;";
        var css3="width:210px;height:180px;background-color: #cccccc;";
        var css1button1="width:30px;height:30px;border:0px; background-color: #cccccc;";
        var css1button2="width:30px;height:30px;border:0px; background-color: #aaaaaa;";
        var css1button3="width:90px;height:30px;border:0px; background-color: #ffffff;";
        var css2button="width:30px;height:30px;border:0px; background-color: #eeeeee;font-size: 10px;";
        var css3span="width: 30px;height:30px;float: left;";
        var css3button="float: right;width:150px;height: 30px;border: 0px;background-color: #ffffff;";
        function toE(Tag,oE,css,h){
            var a=document.createElement(Tag);
            oE.appendChild(a);
            a.style.cssText=css;
            a.innerHTML=h;
            return a;
        }
        var div0=toE("div",document.body,css0,"");
        var div1=toE("div",div0,css1,"");
        var button1=toE("button",div1,css1button2,"<<");button1.οnclick=function(){kg2();};
        var button2=toE("button",div1,css1button1,"<");button2.οnclick=function(){kg4();};
        var button3=toE("button",div1,css1button3,"");
        var button4=toE("button",div1,css1button1,">");button4.οnclick=function(){kg3();};
        var button5=toE("button",div1,css1button2,">>");button5.οnclick=function(){kg1();};
        var div2=toE("div",div0,css1,"");
        var xq1=toE("button",div2,css2button,"週一");
        var xq2=toE("button",div2,css2button,"週二");
        var xq3=toE("button",div2,css2button,"週三");
        var xq4=toE("button",div2,css2button,"週四");
        var xq5=toE("button",div2,css2button,"週五");
        var xq6=toE("button",div2,css2button,"週六");
        var xq7=toE("button",div2,css2button,"週日");
        var div3=toE("div",div0,css3,"");
        var div3bu=toE("button",div3,css3button,"");
        var t0 = new Date();//定義時間對象
        var t1 = t0.getFullYear();//獲取當前年份
        var t2 = t0.getMonth();//獲取當前月份
        var y = t1;
        var m = t2;

        function tick()
        {
            var a=new Date();
            document.getElementById("button_hms").innerHTML =a.getHours() + "點" + a.getMinutes() + "分" + a.getSeconds()+ "秒";
            window.setTimeout(function(){tick();}, 1000);
        }


        function kg(time1, time2) {
            var c0 = new Date(time1, (time2+1), 0).getDate();
            var c1 = new Date(time1, (time2), 0);
            button3.innerText = time1+"年"+(time2+1)+"月";
            div3.innerHTML = "";
            for (var i = 0; i <c1.getDay(); i++) {
                toE("span",div3,css3span,"");
            }
            for (var i = 1; i < c0+1 ; i++) {
                toE("button",div3,css3span,i);
            }
            var hms=toE("button",div3,css3button,"11111111111");
            hms.id="button_hms";
            tick()
        }
        kg(t1, t2);
        window.kg1=function() {
            y++;
            kg(y, m);
        }
        window.kg2=function() {
            y--;
            kg(y, m);
        }
        window.kg3=function() {
            m++;
            if(m<12){
                kg(y, m);
            }
            if(m>11){
                y++;
                m=0;
                kg(y,m);
            }
        }
        window.kg4=function() {
            m--;
            if(m<12){
                kg(y, m);
            }
            if(m<0){
                y--;
                m=11;
                kg(y,m);
            }
        }
    })();