JS实现隔行换色的表格排序

<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="js/utils.js"></script>
<script type="text/javascript" src="js/biaoge.js"></script>

*{
   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;
  }

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?JSON.parse(jsonStr):eval('('+jsonStr+')');
 }
 function rnd(n,m){
  n=Number(n);
  m=Number(m);
  if(isNaN(n) || isNaN(m)){
   return Math.random();//当返回0-1之间的随机小数，说明参数传错了；
  }
  if(n>m){
   var tmp=m;
   m=n;
   n=tmp;
  }
  return Math.round(Math.random()*(m-n)+n);
 }
 function getByClass(strClass,parent){
  parent=parent||document;
  if(flg){
   return this.makeArray(parent.getElementsByClassName(strClass));
  }
  //对IE浏览器兼容处理；
  var aryClass=strClass.replace(/(^ +)|( +$)/g,'').split(/\s+/g);
  var nodeList=parent.getElementsByTagName('*');
  var ary=[];
  for(var i=0; i<nodeList.length; i++){
   var cur=nodeList[i];
   var bOk=true;
   for(var j=0; j<aryClass.length; j++){
    var reg=new RegExp('(^| +)'+aryClass[j]+'( +|$)');
    if(!reg.test(cur.className)){
     bOk=false;
     break;
    }
   }
   if(bOk){
    ary.push(cur);
   }
  }
  return ary;
 }
 function hasClass(curEle,cName){
  var reg=new RegExp('(^| +)'+cName+'( +|$)','g');
  return reg.test(curEle.className);
 }
 function addClass(curEle,strClass){
  var aryClass=strClass.replace(/(^ +)|( +$)/g,'').split(/\s+/g);
  for(var i=0; i<aryClass.length; i++){
   if(!this.hasClass(curEle,aryClass[i])){
    curEle.className+=' '+aryClass[i];
   }
  }
 }
 function removeClass(curEle,strClass){
  var aryClass=strClass.replace(/(^ +)|( +$)/g,'').split(/\s+/g);
  for(var i=0; i<aryClass.length; i++){
   var reg=new RegExp('(^| +)'+aryClass[i]+'( +|$)','g');
   if(reg.test(curEle.className)){
    curEle.className=curEle.className.replace(reg,' ').replace(/(^ +)|( +$)/g,'').replace(/\s+/g,' ');
   }
  }
 }
 function getCss(curEle,attr){
  var val=null;
  var reg=null;
  if(flg){
   val=getComputedStyle(curEle,false)[attr];
  }else{
   if(attr==='opacity'){
    val=curEle.currentStyle['filter'];//‘alpha(opacity=10)';
    reg=/^alpha\(opacity[=:](\d+(\.\d+)?)\)$/;
    return reg.test(val)?RegExp.$1/100:1;
   }
   val=curEle.currentStyle[attr];
  }
  //如果带单位了，干掉单位；
  reg=/^([+-])?(\d+(\.\d+)?)(px|pt|rem|em)?$/gi;
  return reg.test(val)?parseFloat(val):val;
 }
 function setCss(curEle,attr,value){
  //升级3：处理float
  if(attr==='float'){
   curEle.style.cssFloat=value;
   curEle.style.styleFloat=value;
   return;
  }
  //升级2：处理透明度
  if(attr=='opacity'){
   curEle.style.opacity=value;
   curEle.style.filter='alpha(opacity='+(value*100)+')';
   return;
  }
  var reg=/(width|height|top|right|bottom|left|((margin|padding)(top|right|bottom|left)?))/gi;
  //升级1：处理单位；
  if(reg.test(attr)){
   if(value!=='auto' || value.toString().indexOf('%') == -1){
    value=parseFloat(value)+'px';
   }
  }
  curEle.style[attr]=value;
 }
 function setGroupCss(curEle,opt){
  if(Object.prototype.toString.call(opt) !== '[object Object]') return;
  for(var attr in opt){
   this.setCss(curEle,attr,opt[attr]);
  }

 }
 function css(curEle){
  var argTwo=arguments[1];
  if(typeof argTwo==='string'){
   var argThree=arguments[2];
   if(argThree===undefined){//第三个参数没有-获取
    return this.getCss(curEle,argTwo);
   }else{//当有第三个参数-设置一个样式
    this.setCss(curEle,argTwo,argThree);
   }
  }
  if({}.toString.call(argTwo)==='[object Object]'){
   this.setGroupCss(curEle,argTwo);
  }
 }
 function win(attr,value){
  if(value===undefined){
   return document.documentElement[attr]||document.body[attr];
  }
  document.documentElement[attr]=document.body[attr]=value;
 }
 function offset(curEle){
  var l=curEle.offsetLeft;
  var t=curEle.offsetTop;
  var par=curEle.offsetParent;
  while(par){
   if(window.navigator.userAgent.indexOf('MSIE 8') == -1){
    l+=par.clientLeft;
    t+=par.clientTop;
   }
   l+=par.offsetLeft;
   t+=par.offsetTop;
   par=par.offsetParent;
  }
  return {left:l,top:t}
 }
 function getChildren(curEle,tagName){
  var childs=curEle.childNodes;//获取所有的子节点
  var ary=[];
  for(var i=0; i<childs.length; i++){
   var cur=childs[i];
   if(cur.nodeType==1){//首先保证是子元素，再考虑是否过滤；
    if(tagName){
     if(cur.tagName.toLocaleLowerCase()===tagName.toLowerCase()){
      ary.push(cur);
     }
    }else{
     ary.push(cur)
    }
   }
  }
  return ary;
 }
 function prev(curEle){
  if(flg){
   return curEle.previousElementSibling;
  }
  var pre=curEle.previousSibling;
  while(pre && pre.nodeType !== 1){
   pre=pre.previousSibling;
  }
  return pre;
 }
 function next(curEle){
  if(flg){
   return curEle.nextElementSibling;
  }
  var nex=curEle.nextSibling;
  while(nex && nex.nodeType !== 1){
   nex=nex.nextSibling;
  }
  return nex;
 }
 function sibling(curEle){
  var ary=[];
  var pre=this.prev(curEle);
  var nex=this.next(curEle);
  if(pre) ary.push(pre);
  if(nex) ary.push(nex);
  return ary;
 }
 function prevAll(curEle){
  var ary=[];
  var pre=this.prev(curEle);
  while(pre){
   ary.push(pre);
   pre=this.prev(pre);
  }
  return ary;
 }
 function nextAll(curEle){
  var nex=this.next(curEle);
  var ary=[];
  while(nex){
   ary.push(nex);
   nex=this.next(nex);
  }
  return ary;
 }
 function siblings(curEle){
  var ary1=this.prevAll(curEle);
  var ary2=this.nextAll(curEle);
  return ary1.concat(ary2);
 }
 function firstChild(curEle){
  var children=this.getChildren(curEle);
  return children[0];
 }
 function lastChild(curEle){
  var children=this.getChildren(curEle);
  return children[children.length-1];
 }
 function index(curEle){
  return this.prevAll(curEle).length;
 }
 function appendChild(curEle,parent){
  parent.appendChild(curEle);
 }
 function prependChild(curEle,parent){
  var first=this.firstChild(parent);
  if(first){
   parent.insertBefore(curEle,first);
  }else{
   parent.appendChild(curEle);
  }
 }
 function insertBefore(curEle,oldEle){
  oldEle.parentNode.insertBefore(curEle,oldEle);
 }
 function insertAfter(curEle,oldEle){
  var nex=this.next(oldEle);
  if(nex){
   oldEle.parentNode.insertBefore(curEle,nex);
  }else{
   oldEle.parentNode.appendChild(curEle);
  }
 }
 return {
  //makeArray:类数组转数组
  makeArray:makeArray,
  //jsonParse:把JSON格式的字符串转成JSON格式的数据（对象）
  jsonParse:jsonParse,
  //rnd:求一定范围的随机数，包含最大值；
  rnd:rnd,
  //getByClass:通过class名，可以限制范围的获取元素
  getByClass:getByClass,
  //hasClass:判断元素身上是否有某个class名
  hasClass:hasClass,
  //addClass:给元素批量添加出class名
  addClass:addClass,
  //removeClass:从元素身上批量删除class名
  removeClass:removeClass,
  //getCss:获取非行间样式
  getCss:getCss,
  //setCss:给元素设置一个样式
  setCss:setCss,
  //setGroupCss:给元素设置一组样式
  setGroupCss:setGroupCss,
  //css:集获取，设置一个，设置一组为一体；
  css:css,
  //win:浏览器盒子模型的兼容处理
  win:win,
  //offset:元素偏移量的兼容处理；
  offset:offset,
  //getChildren:获取当前元素下的所有子元素（可以通过标签名过滤子元素）
  getChildren:getChildren,
  //prev：获取当前元素的上一个哥哥元素
  prev:prev,
  //next:获取当前元素的下一个弟弟元素
  next:next,
  //sibling:获取当前元素的相邻元素；
  sibling:sibling,
  //prevAll:获取当前元素所有的哥哥元素
  prevAll:prevAll,
  //nextAll:获取当前元素所有的弟弟元素
  nextAll:nextAll,
  //siblings:获取当前元素所有的兄弟元素；
  siblings:siblings,
  //firstChild:获取当前容器下第一个子元素
  firstChild:firstChild,
  //lastChild:获取当前容器下最后一个子元素
  lastChild:lastChild,
  //index:当前元素的索引（当前元素排行第几）；
  index:index,
  //appendChild:把新元素插入到父容器的末尾；
  appendChild:appendChild,
  //prependChild:把新元素插入到父容器的开头；
  prependChild:prependChild,
  //insertBefore:把新元素插入到指定元素的前面
  insertBefore:insertBefore,
  //insertAfter:把新元素插入到指定元素的后面；
  insertAfter:insertAfter
 }
})();

(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);
   }
  }
 }
})();