固定table表头

来源:互联网 发布:梦幻西游淘宝网租号 编辑:程序博客网 时间:2024/06/10 08:27

项目中需要在滚屏中悬浮TABLE表头title,在网上找到一个不错的例子,思路为克隆当前TABLE的表头悬浮在滚动条容器顶端,开发中发现时常会出现表头与数据行错位的情况,故略作改进,即克隆TABLE表头和第一行数据(实际是table的第二行),并使用css的opacity,使第一行数据透明不可见,如此便解决了这个问题,不受table表列的宽度影响。
代码如下:

<html>  <head>  <title>固定表头</title>  </head>  <style>      .box{          width:100%;          height:100%;        overflow-y:auto;/** 必须,否则当表格数据过多时,不会产生滚动条,而是自动延长该div的高度 */          position:relative;/** 必须,若不设置,拷贝得来的表头将相对于其设置该属性为该值的父节点(或间接父节点)定位,如果没有,则相对于body */      }      table,tr,th,td{          border-collapse:collapse;      }      table{          width:100%;      }      td{          height:24px;          line-height:24px;          padding:3px 5px;          background-color:#ddd;          word-break:break-all;/** 设置当文本过长时换行 */              border:1px solid #ccd;      }      th{          height:24px;          line-height:24px;          background-color:#cfc;          border:1px solid #ccd;      }      .opacityTD td{height:1px; line-height:1px; filter: alpha(opacity=0); -moz-opacity: 0; opacity: 0; border: 0;}</style>  <SCRIPT LANGUAGE="JavaScript">  /**   * 功能:固定表头   * 参数  viewid     表格的id   *           scrollid   滚动条所在容器的id,此div的overflow-y必须设置为auto或scroll; *       size       表头的行数(复杂表头可能不止一行)   */  function fixTableTitle(viewid,scrollid,size){          var scroll = document.getElementById(scrollid);        // 将表格拷贝一份      var tb2 = document.getElementById(viewid).cloneNode(true);         // 将拷贝得到的表格保留表头和第一行数据       for(var i=tb2.rows.length;i>size+1;i--){            // 每次删除数据行的第一行            tb2.deleteRow(size);        }      var child = tb2.getElementsByTagName("tr")[1];//获取数据行      if(typeof(child)=='undefined')return;// 若没有数据,则跳出此方法      child.className = "opacityTD";//设置样式透明不可见        // 创建一个div      var bak = document.createElement("div");        var attr_id = document.createAttribute('id');                        //新建Element的id属性      attr_id.nodeValue = 'div'+scrollid;                                    //为id属性赋值      bak.setAttributeNode(attr_id);                                //为Element设置id属性        // 将创建得到的div添加到滚动条所在容器的div      scroll.appendChild(bak);          // 将拷贝得到的表格在删除数据行后添加到创建的div中      bak.appendChild(tb2);        // 设置此DIV的属性      bak.style.position = "absolute";        bak.style.display = "block";        bak.style.left = 0;        bak.style.top = "0px";        bak.style.width = "100%";        // 给滚动条容器绑定滚动条滚动事件,在滚动条滚动事件发生时,调整拷贝得来的表头的top值,保持其在可视范围内,且在滚动条容器的顶端        scroll.onscroll = function(){            var topH = this.scrollTop;//document.body.screenTop;            bak.style.top = topH + "px";      }}// 在页面加载完成后调用该方法  window.onload = function (){      fixTableTitle("tab2",'box2',1);  }  </SCRIPT>  <body>          <div class="box" id="box2">              <table id="tab2">                  <tr>                    <th width="5%">序号</th>                    <th width="10%">姓名</th>                    <th width="20%">身份证号</th>                    <th width="15%">费款所属期</th>                    <th width="10%">缴费基数</th>                    <th width="15%">个人缴费金额</th>                    <th width="15%">单位缴统筹金额</th>                    <th width="10%">缴费标志</th>                </tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>                  <tr><td>1</td><td>唐三藏</td><td>678675196608230764</td><td>201501</td><td>34534</td><td>1234</td><td>3234</td><td>已缴</td></tr>              </table>   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