Jquery Checkbox Checked Show / Hide Div if two checkboxes is check or unchecked

Question

I have this simple jquery code for checkbox that checks via attributes. I know that there are many similarities for this answered already but the idea here is different.

I want to show the A_B div element for the following condition:

#1: User checked checkbox A or B then shows the A_B div element

#2: If user unchecked A checkbox but checkbox B is still checked. Then A_B div element is still showing.

*Note: This can be reversal for the situation*

#3 If user uncheckeds both A or B checkbox. Then only A_B div element will hide.

Right now. When I uncheck A or B checkbox. The div element will hide, should not suppose to toggle. Is there anything here to improve. To achieve the following 3 conditions?

Any ideas / solutions would be a great help. Might be useful also to some users that encounters the same problem as mine. Thanks.

$('input[chck-type="a_b"]').click(function(){
    if (
    $(this).prop("checked") == true
  ) {
      $('.A_B').removeClass('hide');
  } else {
    $('.A_B').addClass('hide');
  }
});

$('input[chck-type="c"]').click(function(){
    if (
    $(this).prop("checked") == true
  ) {
      $('.C_Box').removeClass('hide');
  } else {
    $('.C_Box').addClass('hide');
  }
});

.hide {display:none}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<p><input type="checkbox" chck-type="a_b">A</p>
<p><input type="checkbox" chck-type="a_b">B</p>
<p><input type="checkbox" chck-type="c">C</p>


<div class='A_B hide'>
This box is for A or B.
</div>

<div class='C_Box hide'>
This box is for C.
</div>

Anuja · Accepted Answer · 2023-02-06 04:05:10Z

You are not checking if both checkboxes are unchecked or not.

$('input[chck-type="a_b"]').click(function(){
    if (
    $(this).prop("checked") == true
  ) {
      $('.A_B').removeClass('hide');
  } else if($('input[chck-type="a_b"]')[0].checked == false && $('input[chck-type="a_b"]')[1].checked == false) {
    $('.A_B').addClass('hide');
  }
});

$('input[chck-type="c"]').click(function(){
    if (
    $(this).prop("checked") == true
  ) {
      $('.C_Box').removeClass('hide');
  } else {
    $('.C_Box').addClass('hide');
  }
});

.hide {display:none}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<p><input type="checkbox" chck-type="a_b">A</p>
<p><input type="checkbox" chck-type="a_b">B</p>
<p><input type="checkbox" chck-type="c">C</p>


<div class='A_B hide'>
This box is for A or B.
</div>

<div class='C_Box hide'>
This box is for C.
</div>

Md.Jewel Mia · Accepted Answer · 2023-02-06 04:11:21Z

$('input[chck-type="a_b"]').click(function(){
    let checkboxes = $('input[chck-type="a_b"]:checked').length;
    if (
    checkboxes != 0
  ) {
      $('.A_B').removeClass('hide');
  } else {
    $('.A_B').addClass('hide');
  }
});

$('input[chck-type="c"]').click(function(){
    if (
    $(this).prop("checked") == true
  ) {
      $('.C_Box').removeClass('hide');
  } else {
    $('.C_Box').addClass('hide');
  }
});

.hide {display:none}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<p><input type="checkbox" chck-type="a_b">A</p>
<p><input type="checkbox" chck-type="a_b">B</p>
<p><input type="checkbox" chck-type="c">C</p>


<div class='A_B hide'>
This box is for A or B.
</div>

<div class='C_Box hide'>
This box is for C.
</div>

Tarun Bhati · Accepted Answer · 2023-02-06 10:22:59Z

Simply change your JS to this and will work.

    $('input').on('click', function () {
      var a_b = $('input[chck-type="a_b"]').is(':checked');
      if (!a_b) {
        $('.A_B').addClass('hide');
      } else {
        $('.A_B').removeClass('hide');
      }

      var c = $('input[chck-type="c"]').is(':checked');
      if (!c) {
        $('.C_Box').addClass('hide');
      } else {
        $('.C_Box').removeClass('hide');
      }
    });

    .hide {
      display: none;
    }

    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
    <p><input type="checkbox" chck-type="a_b" />A</p>
    <p><input type="checkbox" chck-type="a_b" />B</p>
    <p><input type="checkbox" chck-type="c" />C</p>

    <div class="A_B hide">This box is for A or B.</div>

    <div class="C_Box hide">This box is for C.</div>

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