jquery 实现checkbox全选、取消全选

<input type=”checkbox” name=”checkbox_name[]” id=”checkbox_name_1″ />1<br />

<input type=”checkbox” name=”checkbox_name[]” id=”checkbox_name_2″ />2<br />

<input type=”checkbox” name=”checkbox_name[]” id=”checkbox_name_3″ />3<br />

<input type=”checkbox” name=”checkbox_name[]” id=”checkbox_name_4″ />4<br />

<input type=”checkbox” name=”checkedAll” id=”checkedAll”/>全选/取消全选

<script type=”text/javascript”><!–
$(function() {
$(“#checkedAll”).click(function() {
if ($(this).attr(“checked”) == true) { // 全选
$(“input[@name='checkbox_name[]‘]”).each(function() {
$(this).attr(“checked”, true);
});
} else { // 取消全选
$(“input[@name='checkbox_name[]‘]”).each(function() {
$(this).attr(“checked”, false);
});
}
});
});
// –></script>