javascript check all and uncheck
<script language='javascript'>
function toggleAll(cb)
{
var val = cb.checked;
var frm = document.forms[0];
var len = frm.elements.length;
var i=0;
for( i=0 ; i<len ; i++)
{
if (frm.elements[i].type=="checkbox" && frm.elements[i]!=cb)
{
frm.elements[i].checked=val;
}
}
}
</script>
//Sample Usage
<form >
Check ALL
<input type="checkbox" name="checkall" onclick="toggleAll(this)" id="Checkbox1" />
<br>
<input type="checkbox" name="check1" id="Checkbox2" />
<input type="checkbox" name="check2" id="Checkbox3" />
<input type="checkbox" name="check3" id="Checkbox4" />
<input type="checkbox" name="check4" id="Checkbox5" />
<input type="checkbox" name="check5" id="Checkbox6" />
</form>
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keycode 9 = Tab Tab
keycode 12 = Clear
keycode 13 = Enter
keycode 16 = Shift_L
keycode 17 = Control_L
keycode 18 = Alt_L
keycode 19 = Pause
keycode 20 = Caps_Lock
keycode 27 = Escape Escape
keycode 32 = space space ......
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