Traversing 2D array in jQuery - Stack Overflow-PHP Tutorial-php.cn

Traversing 2D array in jQuery - Stack Overflow

WBOY

Release： 2016-08-04 09:20:22

Original

1354 people have browsed it

html:

<code><ul class="box2" sss="a">
    <div>
        <input class="input checkboxs" aa="001" type="checkbox"><span> 一</span>
    </div>
    <div>
        <input class="input checkboxs" aa="002" type="checkbox"><span> 二</span>
    </div>
</ul>
<ul class="box2" sss="b">
    <div>
        <input class="input checkboxs" aa="001" type="checkbox"><span> 三</span>
    </div>
    <div>
        <input class="input checkboxs" aa="002" type="checkbox"><span> 四</span>
    </div>
</ul></code>

Copy after login

sss represents the area, and a session is generated when the checkbox is clicked, like this: $_SESSION [$sss] [$aa].
The requirement is: when the page is refreshed, the checked items are still checked.
I know that I can set an ID for the checkbox, and it will be checked by default based on the ID setting. It also worked, but mainly I wanted to know how many he checked in area a or b. So I use a 2D array.

The question now is how to find this checkbox in jQuery?

This is the controller under the jQuery and CI framework that I use the id setting to be checked by default.

jQuery:

<code>var checks=$('input:checkbox');
for(var i=0;i<checks.length;i++){
    //将checkbox的id传过去比较，返回存在的id
    $.post('is_session',{checkid:checks[i].id},function(data){
        //存在则默认被选中
        //alert(data);
        $('#'+data).attr('checked',true);
    });
}</code>

Copy after login

CI:

<code>public function is_session(){
    //当点击选项时 将所属id传过来
    $checked=$this->input->post('checkid');
    //$area=$this->input->post('area');
    //判断$_SESSION[$checked],若存在返回$checked(id)
    if(!empty($_SESSION[$checked])){
        echo $checked;
    }
}
</code>

Copy after login

Thank you for your help.

Reply content:

html:

<code><ul class="box2" sss="a">
    <div>
        <input class="input checkboxs" aa="001" type="checkbox"><span> 一</span>
    </div>
    <div>
        <input class="input checkboxs" aa="002" type="checkbox"><span> 二</span>
    </div>
</ul>
<ul class="box2" sss="b">
    <div>
        <input class="input checkboxs" aa="001" type="checkbox"><span> 三</span>
    </div>
    <div>
        <input class="input checkboxs" aa="002" type="checkbox"><span> 四</span>
    </div>
</ul></code>

Copy after login

The question now is how to find this checkbox in jQuery?

This is the controller under the jQuery and CI framework that I use the id setting to be checked by default.

jQuery:

<code>var checks=$('input:checkbox');
for(var i=0;i<checks.length;i++){
    //将checkbox的id传过去比较，返回存在的id
    $.post('is_session',{checkid:checks[i].id},function(data){
        //存在则默认被选中
        //alert(data);
        $('#'+data).attr('checked',true);
    });
}</code>

Copy after login

CI:

<code>public function is_session(){
    //当点击选项时 将所属id传过来
    $checked=$this->input->post('checkid');
    //$area=$this->input->post('area');
    //判断$_SESSION[$checked],若存在返回$checked(id)
    if(!empty($_SESSION[$checked])){
        echo $checked;
    }
}
</code>

Copy after login

Thank you for your help.

I feel like your idea is wrong
I recommend you a method
$(obj).load("url #local refresh id");
Use jquery for partial refresh, and attach the corresponding attributes during the loop