HTML / Javascript - Expand and collapse table rows (childs) by clicking on a parent row

Question

I am trying to solve one issue since days and finally understood that I will not succeed without help ... I want to do a common thing that we see on internet everyday : be able

Answer 1

You will need to wrap each group of parent + children in a <tbody> for this and use a small script to toggle a class name on this parent <tbody>. Here's an example:

$('table').on('click', 'tr.parent .fa-chevron-down', function(){
  $(this).closest('tbody').toggleClass('open');
});

.parent ~ .cchild {
  display: none;
}
.open .parent ~ .cchild {
  display: table-row;
}
.parent {
  cursor: pointer;
}
tbody {
  color: #212121;
}
.open {
  background-color: #e6e6e6;
}

.open .cchild {
  background-color: #999;
  color: white;
}
.parent > *:last-child {
  width: 30px;
}
.parent i {
  transform: rotate(0deg);
  transition: transform .3s cubic-bezier(.4,0,.2,1);
  margin: -.5rem;
  padding: .5rem;
 
}
.open .parent i {
  transform: rotate(180deg)
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">

<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<link rel="stylesheet"
      href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" />

<div class="container">
    <table class="table">
        <tr>
            <th>Age</th>
            <th>Sex</th>
            <th>Name</th>
            <th colspan="2">From</th>
        </tr>

        <tbody>
        <tr class="parent">
            <td>100</td>
            <td>M</td>
            <td>Dodo</td>
            <td>UK</td>
            <td><i class="fa fa-chevron-down"></i></td>
        </tr>
        <tr class="cchild">
            <td>10</td>
            <td>M</td>
            <td>Child</td>
            <td colspan="2">UK</td>
        </tr>
        <tr class="cchild">
            <td>10</td>
            <td>M</td>
            <td>Child</td>
            <td colspan="2">UK</td>
        </tr>
        <tr class="cchild">
            <td>10</td>
            <td>M</td>
            <td>Child</td>
            <td colspan="2">UK</td>
        </tr>
        </tbody>
        <tbody>
        <tr class="parent">
            <td>100</td>
            <td>M</td>
            <td>Dodo</td>
            <td>UK</td>
            <td><i class="fa fa-chevron-down"></i></td>
        </tr>
        <tr class="cchild">
            <td>10</td>
            <td>M</td>
            <td>Child</td>
            <td colspan="2">UK</td>
        </tr>
        <tr class="cchild">
            <td>10</td>
            <td>M</td>
            <td>Child</td>
            <td colspan="2">UK</td>
        </tr>
        <tr class="cchild">
            <td>10</td>
            <td>M</td>
            <td>Child</td>
            <td colspan="2">UK</td>
        </tr>
        </tbody>
    </table>
</div>