ASP.NET2.0下利用javascript实现TreeView中的checkbox全选！

 

< td >< input  id ="chkall"  type ="checkbox"  onclick ="chkAll();"   /> 全选/取消 </ td >

 1  < script type = " text/javascript " >
 2           function  chkAll()
 3          {
 4               // debugger;
 5               var  chkall =  document.all[ " chkall " ];
 6               var  chkother =  document.getElementsByTagName( " input " );
 7               for  ( var  i = 0 ;i < chkother.length;i ++ )
 8              {
 9                   if ( chkother[i].type == 'checkbox')
10                  {
11                       if (chkother[i].id.indexOf('TreeView1') >- 1 )
12                      {
13                           if (chkall.checked == true )
14                          {
15                              chkother[i].checked = true ;
16                          }
17                           else
18                          {
19                              chkother[i].checked = false ;
20                          }
21                      }
22                  }
23              }
24          }
25       </ script >