<script>
var chk = ducoment.getElementsByName("checkflag[]");
for (i=0;i<chk.length;i++)
chk[i].checked = true;
</script>
var chk = ducoment.getElementsByName("checkflag[]");
for (i=0;i<chk.length;i++)
chk[i].checked = true;
</script>
<input type="checkbox" value=2 name='checkflag[]'>
<input type="checkbox" value=3 name='checkflag[]'>
<input type="button" value="checkall" onClick="checkAll()"><script>
function checkAll(){
var e=document.getElementsByName('checkflag[]');
for(var i=0;i<e.length;i++){
e[i].checked=true;
}
}
</script>
<input type="checkbox" value=1 name='checkflag[]'>
<input type="checkbox" value=2 name='checkflag[]'>
<input type="checkbox" value=3 name='checkflag[]'>
<input type='checkbox' value='all' onclick='checkAll(this)'>全选
<script>
function checkAll(allObj)
{
var chk = document.getElementsByName("checkflag[]");
for (i=0;i<chk.length;i++)
chk[i].checked = allObj.checked;
}
</script>