站长资源网络编程

<table cellpadding="0" cellspacing="0" id="tab">
 <thead>
 <tr>
  <th class="cursor">姓名</th>
  <th class="cursor">年龄</th>
  <th class="cursor">分数</th>
  <th>性别</th>
 </tr>
 </thead>
 <tbody>
 <!--<tr class="bg0">
  <td>赵老大</td>
  <td>45</td>
  <td>89</td>
  <td>0</td>
 </tr>
 <tr class="bg1">
  <td>赵老大</td>
  <td>45</td>
  <td>89</td>
  <td>0</td>
 </tr>-->
 </tbody>
</table>
<script type="text/javascript" src="/UploadFiles/2021-04-02/utils.js">

css 样式 


*{
   margin:0;
   padding:0;
  }
  table{
   width: 800px;
   margin:50px auto;
   box-shadow: 0 0 10px #333;
   border-radius: 10px;
   overflow: hidden;
   font-size: 18px;
  }
  table thead tr{
   text-align: center;
   width: 100%;
   height: 50px;
   background:#ffb4b4;
  }
  table thead th{
   width: 200px;
   line-height: 50px;
   color: white;
  }
  table tbody tr{
   height: 40px;
   line-height: 40px;
   text-align: center;
  }
  table tbody tr.bg0{
   background: lightgoldenrodyellow;
  }
  table tbody tr.bg1{
   background: lightgray;
  }
  .cursor{
   cursor: pointer;
  }


JS 
所用到的  util.js


var utils=(function(){
 var flg='getComputedStyle' in window; // 惰性思想的运用；
 function makeArray(arg){
  if(flg){ // 标准浏览器
   return Array.prototype.slice.call(arg);
  }else{
   var ary=[];
   for(var i=0; i<arg.length; i++){
    ary.push(arg[i]);
   }
   return ary;
  }
 }
 function jsonParse(jsonStr){
  return 'JSON' in window"htmlcode">

(function () {
 var oTab = document.getElementById('tab');
 var tHead = oTab.tHead;
 var tCells = tHead.rows[0].cells;
 var tBody = oTab.tBodies[0];
 var aRows = tBody.rows;
 var data = null;
 getData();
 function getData() {
  var xml = new XMLHttpRequest;
  xml.open('get', 'data.txt', false);
  xml.onreadystatechange = function () {
   if (xml.readyState === 4 && /^2\d{2}$/.test(xml.status)) {
    data = utils.jsonParse(xml.responseText);
   }
  };
  xml.send();
 }
 bind();
 function bind() {
  var str = '';
  for (var i = 0; i < data.length; i++) {
   var curData = data[i];
   curData.sex = curData.sex == 0 ? '男' : '女';
   str += '<tr>      <td>' + curData.name + '</td>      <td>' + curData.age + '</td>      <td>' + curData.score + '</td>      <td>' + curData.sex + '</td>      </tr>';
  }
  tBody.innerHTML = str;
 }
 changeColor();
 function changeColor() {
  for (var i = 0; i < aRows.length; i++) {
   aRows[i].className = 'bg' + i % 2;
  }
 }
 function sort(n) {
  for (var i = 0; i < tCells.length; i++) {
   tCells[i].flag = i == n ? tCells[i].flag * -1 : -1;
  }
  var ary = utils.makeArray(aRows);
  ary.sort(function (a, b) {
   a = a.cells[n].innerHTML;
   b = b.cells[n].innerHTML;
   if (isNaN(a) && isNaN(b)) {
    return a.localeCompare(b) * tCells[n].flag;
   }
   return (a - b) * tCells[n].flag;
  });
  var frg = document.createDocumentFragment();
  for (var i = 0; i < ary.length; i++) {
   frg.appendChild(ary[i]);
  }
  tBody.appendChild(frg);
  frg = null;
  changeColor();
 }
 for (var i = 0; i < tCells.length; i++) {
  if (tCells[i].className == 'cursor') {
   tCells[i].flag = -1;
    tCells[i].index = i;
   tCells[i].onclick = function () {
    sort(this.index);
   }
  }
 }
})();


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