jq多选框全选，多选

html代码

<input type="hidden" name="f_information_id" id="f_information_id" value="<?php echo $f_information_id?>">
<table class="table table-hover">
    <thead>
    <tr>
        <th> <input type="checkbox" class="btn btn-xs btn-primary btn-outline " id="check_all"> 全选 </input></th>
        <th>姓名</th>
        <th>差评</th>
    </tr>
    </thead>
    <tbody>
    <?php if (count($comments_record)) {
        foreach ($comments_record as $one) { ?>
            <tr class="gradeC">
                <td>
                    <input type="checkbox" class="btn btn-sm btn-primary choose_admin" id="<?php echo $one['f_admin_id'];?>" value="<?php echo $one['f_admin_id']?>" name="choose_admin" data-can-choose="true"/>
                </td>
                <td><?php echo $admin_record[$one['f_admin_id']]['f_name']; ?></td>
                <td><?php echo $one['f_num'];?></td>
            </tr>
        <?php }} ?>
    </tbody>
</table>

js代码

    //全选
    var flag = true; // 未选中
    $("#check_all").click(function(){
        if(flag) {
            var chk_value = [];
            $('input[name="choose_admin"]').each(function(){
                $(this).attr("checked",true);
                chk_value.push($(this).val());
                var admin_ids = chk_value.join(",");       //js中数组转换为字符串
                $("#admin_ids").val(admin_ids);  //把选中的复选框赋值给hidden的input中
            });
        }
        else {
            $('input[name="choose_admin"]').each(function(){
                $(this).removeAttr("checked");
                $("#admin_ids").val();  //把选中的复选框赋值给hidden的input中

            });
        }
        flag = !flag;
    });

　
    $(".choose_admin").change(function () {
        var chk_value = [];
        $('input[name="choose_admin"]:checked').each(function(){
            chk_value.push($(this).val());
        });
        var admin_ids = chk_value.join(",");       //js中数组转换为字符串

        $("#admin_ids").val(admin_ids);  //把下载的选项赋值给hidden的input中
    });