FreeCodeCamp中文网练习代码7

<script>

  $(document).ready(function() {

    $("#target1").css("color", "red");

    $("#target1").prop("disabled", true);

    $("#target4").remove();

    $("#target2").appendTo("#right-well");

    $("#target5").clone().appendTo("#left-well");

    $("#target1").parent().css("background-color", "red");

    $("#right-well").children().css("color", "orange");

    $("#left-well").children().css("color", "green");

    $(".target:nth-child(2)").addClass("animated bounce");

    $(".target:even").addClass("animated shake");

    $("body").addClass("animated hinge");

  });

</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>