jquery 实现checkbox全选

<script type="text/javascript">
                function selectAll(checkbox) {
                    $('input[type=checkbox]').attr('checked',   $(checkbox).attr('checked'));
                }
 </script>

 

 

< input type = "checkbox" onclick = "selectAll(this);" />全选

< input type = "checkbox"   />

< input type = "checkbox"   />

< input type = "checkbox"   />

< input type = "checkbox"   />

< input type = "checkbox"   />

< input type = "checkbox"   />