Hi,
I am new bie and need to understand below jquery code, i found this code from web source,
why we writing this:
(1) this.checked
(2) .length==$(‘.case:checked’).length
can any 1 explain me above 2 points to understand the code…
<table border="1">
<tr>
<th><input type="checkbox" id="selectall"/></th>
<th>Cell phone</th>
<th>Rating</th>
</tr>
<tr>
<td align="center"><input type="checkbox" class="case" name="case" value="1"/></td>
<td>BlackBerry Bold 9650</td>
<td>2/5</td>
</tr>
<tr>
<td align="center"><input type="checkbox" class="case" name="case" value="2"/></td>
<td>Samsung Galaxy</td>
<td>3.5/5</td>
</tr>
<tr>
<td align="center"><input type="checkbox" class="case" name="case" value="3"/></td>
<td>Droid X</td>
<td>4.5/5</td>
</tr>
<tr>
<td align="center"><input type="checkbox" class="case" name="case" value="4"/></td>
<td>HTC Desire</td>
<td>3/5</td>
</tr>
<tr>
<td align="center"><input type="checkbox" class="case" name="case" value="5"/></td>
<td>Apple iPhone 4</td>
<td>5/5</td>
</tr>
</table>
<SCRIPT>
$(function(){
$('#selectall').click(function(){
$('.case').attr('checked', this.checked);
});
$('.case').click(function(){
if($('.case').length==$('.case:checked').length){
$('#selectall').attr('checked','checked');
}else{
$('#selectall').removeAttr('checked');
}
});
});
</SCRIPT>