日历组件demo

日历组件插件，可随意选择日期

datetime.js:

//  onfocus="currentWeek(this);"(function($){    $(".datetimeInputCls").focus(function(){        currentWeek(this);    });    $.fn.customedDateTime = function(options){        var defaults = {             width:200,             height:30        };        var opts = $.extend(defaults,options);        this.css({height:opts.height,width:opts.width});        if(!this.hasClass("datetimeInputCls")){            this.addClass("datetimeInputCls");            this.focus(function(){                currentWeek(this);            });        }    };    function currentWeek(ele) {        var obj = offset(ele);        //console.log(obj);        var x = obj.left;        var y = obj.top + ele.offsetHeight + 1;        //创建日历界面        if (!document.getElementById('week')) {            var oDiv = document.createElement('div');            document.body.appendChild(oDiv);            oDiv.id = 'week';            oDiv.style.position="relative";                             oDiv.style.top = y + "px";            oDiv.style.left = x + "px";            //创建日历title            var h6 = document.createElement('h6');            oDiv.appendChild(h6);            var prevYear = document.createElement('div');            h6.appendChild(prevYear);            prevYear.className = 'prev';            prevYear.innerHTML = '上一年';            var prev = document.createElement('div');            h6.appendChild(prev);            prev.className = 'prev';            prev.innerHTML = '上个月';            var content = document.createElement('div');            content.className = "content";            h6.appendChild(content);            var nextYear = document.createElement('div');            h6.appendChild(nextYear);            nextYear.className = 'next';            nextYear.innerHTML = '下一年';            var next = document.createElement('div');            h6.appendChild(next);            next.className = 'next';            next.innerHTML = '下个月';            //创建星期日到星期六的文字行            var oPs = document.createElement('p');            oPs.className = "rlTitle";            oDiv.appendChild(oPs);            var opsCont = ['日', '一', '二', '三', '四', '五', '六'];            for (var i = 0; i <= 6; i++) {                var oSpan = document.createElement('span');                oPs.appendChild(oSpan);                oSpan.innerHTML = opsCont[i];            }            //创建日历上面的日期行数所需要的变量            var oUl = document.createElement('ul');            oUl.className = "rlCenter";            oDiv.appendChild(oUl);            var currentDate = new Date();            var currentYear = currentDate.getFullYear();            var currentMonth = currentDate.getMonth();            active(currentYear,currentMonth);//传参数月份            //创建日历上下翻月            prev.onclick = function () {                active(currentYear,--currentMonth);            };            next.onclick = function () {                active(currentYear,++currentMonth);            };            //创建日历上下翻年            prevYear.onclick = function () {                active(--currentYear,currentMonth);            };            nextYear.onclick = function () {                active(++currentYear,currentMonth);            };        }else{//已存在ID为week的元素           alert("页面中存在ID为week的元素，与日期插件中元素ID重复，请更换名称！");           return;        }        //动态创建日历上面日期，变包装成方法        function active(y,m) {            //alert("y: " + y + "; m: " + m);            oUl.innerHTML = ''; //切忌一定要把这个内容去掉，要不然会点一次翻页都在日历下面依次显示出来            var activeDate = new Date(y, m, 1); //外面传进来的不断变化的日期对象            var year = activeDate.getFullYear();            var month = activeDate.getMonth(); //把当前的月份保存下来只是为了给title获取月份            content.innerHTML = year + '年' + (month + 1) + '月';            //创建日历上面的日期行数 getDay 获取星期的某一天 周日对应getDay() = 0            //alert("activeDate.getDay(): " + activeDate.getDay());            var n = 1 - activeDate.getDay();            if (n == 1) {                n = -6;            } //为了日历更友好的显示三个月，让用户看的更明白。            //将日期设为n天之后的日期 |n|+1为显示上个月的天数            activeDate.setDate(n); //如果n为负数，则减少月份.在用这个月最后一天减去这个值就可以获得日历从哪天开始的。            //alert("activeDate.getDate(): " + activeDate.getDate());            for (var i = 0; i < 42; i++) {//显示六行                var oLi = document.createElement('li');                oUl.appendChild(oLi);                var date = activeDate.getDate(); //返回日期1-31号                oLi.innerHTML = date;                oLi.dateValue = year + "/" + formatNumber(activeDate.getMonth() + 1)                               + "/" + formatNumber(date); //这里必须是activeDate.getMonth()+1，不能用m+1。因为这个是一直变化的。要不然日历不管点哪天都是属于当前月份的。                if (activeDate.getMonth() != month) {                    oLi.style.color = "#ccc"; //不是本月的天数颜色变成灰色                       }else{//上一个月的不可选择                    oLi.onclick = function () {                        ele.value = this.dateValue;//文本框获取的年月日                        //console.log("oDiv: ");                        //console.log(oDiv);                        document.body.removeChild(oDiv); //获取到年月日，日历取消                        oDiv = null;                    };                    //定义日期的鼠标经过和移出事件                    oLi.onmouseover = function(){                      this.style.backgroundColor = "#ddd";                    }                    oLi.onmouseout = function(){                      this.style.backgroundColor = "#fff";                    }                }                //切忌下面这个增加天数语句，一定要判断完上面是不是本月的天数，然后在添加这条增加语句，要不然会出现错误。                activeDate.setDate(date + 1); //如果超出该月份应有的天数则增加月份            }        }     }    function formatNumber(number){         if(number != undefined && number != ""){              if(number < 10 ){                 return "0" + number;              }else{                 return number;              }          }           return "";     }    function offset(ele) {            var l = ele.offsetLeft;            var t = ele.offsetTop;            var p = ele.offsetParent;            while (p) {                if (window.navigator.userAgent.indexOf("MSIE 8") > -1) {                    l += p.offsetLeft;                    t += p.offsetTop;                } else {                    l += p.offsetLeft + p.clientLeft;                    t += p.offsetTop + p.clientTop;                }                p = p.offsetParent;            }            return {                left: l,                top: t            }    }})(jQuery);

datetime.css:

      * {    margin: 0;    padding: 0;}ul, li {    list-style: none;}#week {    width: 350px;    height: 350px;    border: 1px solid #ccc;}#week h6 {    font-size: 20px;    overflow: hidden;    height: 40px;    line-height: 40px;}#week h6 div {    float: left;    width: 150px;    text-align: center;}#week .prev {    float: left;    font-size: 12px;    width: 50px;    cursor: pointer;}#week .next {    float: right;    font-size: 12px;    width: 50px;    cursor: pointer;}#week p span {    width: 50px;    float: left;    text-align: center;    height: 30px;    line-height: 30px;}#week p {    background: #ccc;    overflow: hidden;    height: 30px;}#week ul {    margin-top: 10px;}#week ul li {    width: 50px;    float: left;    text-align: center;    height: 30px;    cursor: pointer;    padding-top:5px;    border-radius:2px;}/*20170306 */.datetimeInputCls{    width:200px;    height:30px;    border-radius:5px;}

调用方式有两种：
(1)设置类名为datetimeInputCls

<input type="text" id="ele" class="datetimeInputCls" style="position:absolute;left:30%;top:20%;"  />

(2)通过函数调用

 $("#ele").customedDateTime({         width:250,        height:30});     

demo.html:

<!DOCTYPE html><html>    <head>        <meta charset="utf-8" />        <meta http-equiv="X-UA-Compatible" content="IE=Edge" />        <meta name="viewport" content="width=device-width, initial-scale=1" />        <title>日历组件测试</title>        <!-- datetime.css -->        <link rel="stylesheet" th:href="@{/css/customedPlugins/datetime.css}" />        <style type="text/css">             </style>    </head>     <body>        <!-- class="datetimeInputCls" -->         <input type="text" id="ele" style="position:absolute;left:30%;top:20%;"  />        <!--[if !IE]><!-->        <script th:src="@{/jquery/2.1.4/jquery-2.1.4.min.js}"></script>        <!--<![endif]-->         <!--[if IE]><!-->        <script th:src="@{/jquery/1.11.0/jquery-1.11.0.min.js}"></script>        <!--<![endif]-->             <script th:src="@{/js/customedPlugins/datetime.js}"></script>        <script th:inline="javascript">         /*<![CDATA[*/                            $("#ele").customedDateTime({                      width:250,                     height:30                 });             /*]]>*/        </script>           </body></html>