test selectors

by Vasil Svetoslavov

HTML

<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<div class="panel">
  <div class="panel-body">

    <form>
      <div class="input-group">
        <label for="in1">Test 1</label>
        <input type="text" id="in1" class="form-control" />
      </div>
    </form>
  </div>
</div>
<div class="panel">
  <div class="panel-body">
    <form>
      <label for="in2">Skip Me</label>
      <div class="input-group">
        <input type="text" id="in2" class="form-control" />
        <span class="input-group-btn">
        <button class="btn btn-primary">
        Mamata
        </button>
      </span>
      </div>
    </form>
  </div>
</div>
<button class="btn btn-default" onclick="test()">Test</button>

CSS

.red {
  background-color: #ff0000;
}

JavaScript

function test() {
  $('.panel').addClass('red');
}