--description--

Now you know three ways of targeting elements: by type: $("button"), by class: $(".btn"), and by id $("#target1").

Although it is possible to add multiple classes in a single .addClass() call, let's add them to the same element in three separate ways.

Using .addClass(), add only one class at a time to the same element, three different ways:

Add the animated class to all elements with type button.

Add the shake class to all the buttons with class .btn.

Add the btn-primary class to the button with id #target1.

Note: You should only be targeting one element and adding only one class at a time. Altogether, your three individual selectors will end up adding the three classes shake, animated, and btn-primary to #target1.

--hints--

Your code should use the $("button") selector.

assert(code.match(/\$\s*?\(\s*?(?:'|")\s*?button\s*?(?:'|")/gi));

Your code should use the $(".btn") selector.

assert(code.match(/\$\s*?\(\s*?(?:'|")\s*?\.btn\s*?(?:'|")/gi));

Your code should use the $("#target1") selector.

assert(code.match(/\$\s*?\(\s*?(?:'|")\s*?#target1\s*?(?:'|")/gi));

You should only add one class with each of your three selectors.

assert(
  code.match(/addClass/g) &&
    code.match(/addClass\s*?\(\s*?('|")\s*?[\w-]+\s*?\1\s*?\)/g).length > 2
);

Your #target1 element should have the classes animated‚ shake and btn-primary.

assert(
  $('#target1').hasClass('animated') &&
    $('#target1').hasClass('shake') &&
    $('#target1').hasClass('btn-primary')
);

You should only use jQuery to add these classes to the element.

assert(!code.match(/class.*animated/g));

--seed--

--seed-contents--

<script>
  $(document).ready(function() {

  });
</script>

<!-- Only change code above this line -->

<div class="container-fluid">
  <h3 class="text-primary text-center">jQuery Playground</h3>
  <div class="row">
    <div class="col-xs-6">
      <h4>#left-well</h4>
      <div class="well" id="left-well">
        <button class="btn btn-default target" id="target1">#target1</button>
        <button class="btn btn-default target" id="target2">#target2</button>
        <button class="btn btn-default target" id="target3">#target3</button>
      </div>
    </div>
    <div class="col-xs-6">
      <h4>#right-well</h4>
      <div class="well" id="right-well">
        <button class="btn btn-default target" id="target4">#target4</button>
        <button class="btn btn-default target" id="target5">#target5</button>
        <button class="btn btn-default target" id="target6">#target6</button>
      </div>
    </div>
  </div>
</div>

--solutions--

<script>
  $(document).ready(function() {
    $("button").addClass("animated");
    $(".btn").addClass("shake");
    $("#target1").addClass("btn-primary");
  });
</script>

<!-- Only change code above this line -->

<div class="container-fluid">
  <h3 class="text-primary text-center">jQuery Playground</h3>
  <div class="row">
    <div class="col-xs-6">
      <h4>#left-well</h4>
      <div class="well" id="left-well">
        <button class="btn btn-default target" id="target1">#target1</button>
        <button class="btn btn-default target" id="target2">#target2</button>
        <button class="btn btn-default target" id="target3">#target3</button>
      </div>
    </div>
    <div class="col-xs-6">
      <h4>#right-well</h4>
      <div class="well" id="right-well">
        <button class="btn btn-default target" id="target4">#target4</button>
        <button class="btn btn-default target" id="target5">#target5</button>
        <button class="btn btn-default target" id="target6">#target6</button>
      </div>
    </div>
  </div>
</div>