<input type="checkbox" id="all" />全选<br />

<input type="checkbox" name="permission" />添加权限<br />

<input type="checkbox" name="permission" />修改权限<br />

<input type="checkbox" name="permission" />权限列表<br />

<script>

    $("#all").on('click',function() {

        $("input[name='permission']").prop("checked", this.checked);

    });

    $("input[name='permission']").on('click',function() {

        var $subs = $("input[name='permission']");

        $("#all").prop("checked" , $subs.length == $subs.filter(":checked").length ? true :false);

    });

</script>