js全选简单例子


<html>
<head>
 <title>js全选简单例子</title>
 <meta http-equiv="Content-Type" content="text/html; charset=GBK" />
 <meta http-equiv="Cache-Control" content="no-store" />
 <meta http-equiv="Pragma" content="no-cache" />
 <meta http-equiv="Expires" content="0" />

<script type="text/javascript">
function selectAll(obj,list) {
    if(!(obj && list)) {
     return;
    }
    if(list.length)
    {

        for(var i=0;i<list.length;i++)
        {
            list[i].checked=obj.checked;
        }
    }
    else
    {
        list.checked=obj.checked;
    }
}
 
 </script>
</head>

<body>
     
        <table >
         
           <tr>
               <td >全选<input type="checkbox" onclick="selectAll(this,document.all('form1').id)"></td>
               <td >水果种类</td>
           </tr>
           <form name="form1" >
    
     <tr  >
            <td ><input type="checkbox" name="id" value="1"></td>
            <td>苹果</td>
           </tr>
    
     <tr  >
            <td ><input type="checkbox" name="id" value="2"></td>
            <td>橘子</td>
           </tr>
    
     <tr  >
            <td ><input type="checkbox" name="id" value="3"></td>
            <td>梨子</td>
           </tr>
    
     <tr  >
            <td ><input type="checkbox" name="id" value="4"></td>
            <td>香蕉</td>
           </tr>
    
     <tr >
            <td ><input type="checkbox" name="id" value="5"></td>
            <td>荔枝</td>
           </tr>
    
     </form>
        </table>
       
</body>
</html>

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转载自fanjf.iteye.com/blog/1420423