JS-DOM操作应用高级（三）

appendChild 1.先把元素从原有的父级上删除 2.添加到新的父级

<title>无标题文档</title>
<script>
window.onload=function ()
{
    var oUl=document.getElementById('ul1');
    var oBtn=document.getElementById('btn1');
    
    oBtn.onclick=function ()
    {
        var aLi=oUl.getElementsByTagName('li');
        
        var arr=[];
        for(var i=0;i<aLi.length;i++)
        {
            arr[i]=aLi[i];
        }
        
        arr.sort(function(li1,li2){
                          var n1=parseInt(li1.innerHTML);
                          var n2=parseInt(li2.innerHTML);
                          
                          return n1-n2;
                          });
        
        for(var i=0;i<arr.length;i++)
        {
            oUl.appendChild(arr[i]);
        }
    }
}
</script>
</head>

<body>
<input id="btn1" type="button" value="排序"/>
<ul id="ul1">
   <li>23</li>
   <li>9</li>
   <li>99</li>
   <li>82</li>
   <li>34</li>
</ul>
</body>

排序后：

例二

<title>无标题文档</title>
<style>
#ul1{background:green;}
#ul2{background:yellow;}
</style>
<script>
window.onload=function ()
{
    var oBtn=document.getElementById('btn1');
    var oUl1=document.getElementById('ul1');
    var oUl2=document.getElementById('ul2');
    
    oBtn.onclick=function ()
    {
        var oLi=oUl1.children[0];
        oUl2.appendChild(oLi);
    }
}
</script>
</head>

<body>
<ul id="ul1">
   <li>1</li>
   <li>2</li>
   <li>3</li>
   <li>4</li>
</ul>
<input id="btn1" type="button" value="移动"/>
<ul id="ul2">
</ul>
</body>

表格排序

<title>无标题文档</title>
<script>
window.onload=function ()
{
    var oTab=document.getElementById('tab1');
    var oBtn=document.getElementById('btn1');
    
    oBtn.onclick=function ()
    {
        var arr=[];
        for(var i=0;i<oTab.tBodies[0].rows.length;i++)
        {
            arr[i]=oTab.tBodies[0].rows[i];
        }
        
        arr.sort(function(tr1,tr2){
                          var n1=parseInt(tr1.cells[0].innerHTML);
                          var n2=parseInt(tr2.cells[0].innerHTML);
                          
                          return n1-n2;
                          });
        
        for(var i=0;i<arr.length;i++)
        {
            oTab.tBodies[0].appendChild(arr[i]);
        }
    };
};
</script>
</head>

<body>
<input id="btn1" type="button" value="排序"/>
<table id="tab1" border="1" width="500">
    <thead>
       <td>ID</td>
       <td>姓名</td>
       <td>年龄</td>
       <td>操作</td>
    </thead>
    <tbody>
       <tr>
        <td>2</td>
        <td>张三</td>
        <td>24</td>
        <td></td>
       </tr>
       <tr>
        <td>1</td>
        <td>blue</td>
        <td>23</td>
        <td></td>
       </tr>
       <tr>
        <td>5</td>
        <td>李六</td>
        <td>27</td>
        <td></td>
       </tr>
       <tr>
        <td>4</td>
        <td>王五</td>
        <td>26</td>
        <td></td>
       </tr>
       <tr>
        <td>3</td>
        <td>李四</td>
        <td>25</td>
        <td></td>
       </tr>
       
    </tbody>
</table>
</body>

排序后：

posted on 2015-03-06 21:50 文森博客阅读(222) 评论(0) 编辑收藏举报