仿微博的JQuery日历控件

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class="htmledit_views">

就是常见的选取日期的日历控件而已，还没到的日期无法选择，其它的都和正常日历控件差不多，先看看演示效果吧。

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实现原理主要是处理class="tags" href="/tags/TABLE.html" title=table>table，生成tr td，其中最重要的是如何找出每月第一天是星期几，然后就能对应出这个月的余下天数。

日历控件网上一搜一大把，但是我觉得自己写一遍还是有好处的。代码可以查看本页源代码，下面是js代码：

class="language-html"><script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/class="tags" href="/tags/JQUERY.html" title=jquery>jquery/1.6.1/class="tags" href="/tags/JQUERY.html" title=jquery>jquery.min.js"></script>
   <script type="text/javascript">
       //全部包裹
       var sookerTime = (class="tags" href="/tags/FUNCTION.html" title=function>function ($) {
           var OBJ;
           class="tags" href="/tags/FUNCTION.html" title=function>function isLeap(year) { return (year % 100 == 0 ? (year % 400 == 0 ? 1 : 0) : (year % 4 == 0 ? 1 : 0)); }
           class="tags" href="/tags/FUNCTION.html" title=function>function isValid(d) { return (d.getTime() - (new Date()).getTime() < 0) ? true : false; } //是否在今天以后
           class="tags" href="/tags/FUNCTION.html" title=function>function setDate(year, month) {     //建立日期class="tags" href="/tags/TABLE.html" title=table>table
               var n1 = new Date(year, month, 1),
                   firstday = n1.getDay(),
                   mdays = new Array(31, 28 + isLeap(year), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31),
                   rows = Math.ceil((mdays[month] + firstday) / 7),
                   class="tags" href="/tags/TABLE.html" title=table>table = $("<class="tags" href="/tags/TABLE.html" title=table>table>", { "class": "days" }),
                   tbody = $("<tbody>");
               $("#class="tags" href="/tags/CALENDAR.html" title=calendar>calendar").find(".days").remove();
               for (var i = 0; i < rows; i++) {
                   var tr = $("<tr>");
                   for (j = 0; j < 7; j++) {
                       var idx = i * 7 + j,
                           d = idx - firstday + 1;
                       if (d <= 0 || d > mdays[month]) {   //无效日期
                           d = " "
                       }
                       var td = $("<td>", { html: d }).appendTo(tr);
                       if (isValid(new Date(year, month, d))) {  //今天以后的时间都不绑定时间
                           td.addClass("before");
                           td.hover(class="tags" href="/tags/FUNCTION.html" title=function>function () {
                               $(this).addClass("day");
                           }, class="tags" href="/tags/FUNCTION.html" title=function>function () { $(this).removeClass("day"); }).click(class="tags" href="/tags/FUNCTION.html" title=function>function () {
                               OBJ.attr("value", $("#class="tags" href="/tags/CALENDAR.html" title=calendar>calendar .year").attr("value") + "-" + (parseInt($("#class="tags" href="/tags/CALENDAR.html" title=calendar>calendar .month").attr("value")) + 1) + "-" + $(this).text());
                               $("#class="tags" href="/tags/CALENDAR.html" title=calendar>calendar").css("display", "none");
                           });
                       }
                   }
                   tr.appendTo(tbody);
               }
               tbody.appendTo(class="tags" href="/tags/TABLE.html" title=table>table);
               $("#class="tags" href="/tags/CALENDAR.html" title=calendar>calendar").append(class="tags" href="/tags/TABLE.html" title=table>table);
           }
           class="tags" href="/tags/FUNCTION.html" title=function>function createTime() {
               var class="tags" href="/tags/CALENDAR.html" title=calendar>calendar = $("<div>", { "class": "pc_caldr", id: "class="tags" href="/tags/CALENDAR.html" title=calendar>calendar" }),

                       td = new Date(),
                       of = OBJ.offset();
               if (document.getElementById("class="tags" href="/tags/CALENDAR.html" title=calendar>calendar")) {
                   class="tags" href="/tags/CALENDAR.html" title=calendar>calendar = $("#class="tags" href="/tags/CALENDAR.html" title=calendar>calendar").css({ left: of.left, top: of.top + 18, display: "block" });
                   setDate(td.getFullYear(), td.getMonth());
                   $("#class="tags" href="/tags/CALENDAR.html" title=calendar>calendar .year").attr("value", td.getFullYear());
                   $("#class="tags" href="/tags/CALENDAR.html" title=calendar>calendar .month").attr("value", td.getMonth());
               } else {
                   var se = "<div class='selector'><select class='month'><option value='0'>一月</option><option value='1'>二月</option><option value='2'>三月</option><option value='3'>四月</option><option value='4'>五月</option><option value='5'>六月</option><option value='6'>七月</option><option value='7'>八月</option><option value='8'>九月</option><option value='9'>十月</option><option value='10'>十一月</option><option value='11'>十二月</option></select><select class='year'><option value='2009'>2009</option><option value='2010'>2010</option><option value='2011'>2011</option></select></div><ul class='weeks'><li>日</li><li>一</li><li>二</li><li>三</li><li>四</li><li>五</li><li>六</li></ul>";
                   class="tags" href="/tags/CALENDAR.html" title=calendar>calendar.css({ left: of.left, top: of.top + 18 }).html(se).appendTo($("body"));
                   setDate(td.getFullYear(), td.getMonth());
                   $("#class="tags" href="/tags/CALENDAR.html" title=calendar>calendar .year").attr("value", td.getFullYear());
                   $("#class="tags" href="/tags/CALENDAR.html" title=calendar>calendar .month").attr("value", td.getMonth());
                   bindClick();
               }
           }
           class="tags" href="/tags/FUNCTION.html" title=function>function bindClick() {   //给下拉列表绑定时间
               var a = $("#class="tags" href="/tags/CALENDAR.html" title=calendar>calendar .month"),
                  b = $("#class="tags" href="/tags/CALENDAR.html" title=calendar>calendar .year");
               a.change(class="tags" href="/tags/FUNCTION.html" title=function>function () {
                   setDate(b.attr("value"), $(this).attr("value"));
               });
               b.change(class="tags" href="/tags/FUNCTION.html" title=function>function () {
                   setDate($(this).attr("value"), a.attr("value"));
               });
           }
           return {
               init: class="tags" href="/tags/FUNCTION.html" title=function>function (obj) {   //返回调用的接口              
                   OBJ = obj;
                   createTime();
               }
           }
       })(jQuery);

       //使用方法
       $(".tiemin").focus(class="tags" href="/tags/FUNCTION.html" title=function>function(){ 
          sookerTime.init($(this));
        });
         
   </script>