main.html

<style>
  .gold {
    background: gold;
  }
  .silver {
    background: silver;
  }
  .table tbody tr > td.success {
    background-color: #dff0d8;
  }

  .table tbody tr > td.error {
    background-color: #f2dede;
  }

  .table tbody tr > td.warning {
    background-color: #fcf8e3;
  }

  .table tbody tr > td.info {
    background-color: #d9edf7;
  }
  .completed {
    text-decoration: line-through;
  }
  .important {
    font-weight: bold;
  }
  .urgent {
      color: red;
  }
</style>
<div ng-app="ngClassBenchmark" ng-cloak class="container-fluid">
  <div ng-controller="DataController as benchmark" class="row">
    <div class="col-lg-12">

      <div class="well">
        <h3>Parameters</h3>

        <br>
        <p>
          <label>Number of todos</label><br>
          <input type="number" ng-model="benchmark.numberOfTodos">
        </p>

        <br>
        <p>
          <label>Implementation</label><br>
          <div class="radio">
            <label>
              <input ng-model="benchmark.implementation" value="tableOptimized"
                type="radio" name="implementation">
              Table optimized <br>
              <code>ng-class="todo.completed && 'success'"</code>
            </label>
          </div>
          <div class="radio">
            <label>
              <input ng-model="benchmark.implementation" value="table"
                type="radio" name="implementation">
              Table <br>
              <code>ng-class="{success: todo.completed}"</code>
            </label>
          </div>
          <div class="radio">
            <label>
              <input ng-model="benchmark.implementation" value="list"
                type="radio" name="implementation">
              List <br>
              <code>ng-class="{completed: todo.completed, urgent: todo.urgent, important: todo.important"}</code>
            </label>
          </div>
          <div class="radio">
            <label>
              <input ng-model="benchmark.implementation" value="singleOptimized"
                type="radio" name="implementation">
              Single ngClass optimized <br>
              <code>
                ng-class="{'panel-success': !!benchmark.todos, 'panel-danger': !benchmark.todos}"
              </code>
            </label>
          </div>
          <div class="radio">
            <label>
              <input ng-model="benchmark.implementation" value="single"
                type="radio" name="implementation">
              Single ngClass <br>
              <code>
                ng-class="{'panel-success': benchmark.todos, 'panel-danger': !benchmark.todos}"
              </code>
            </label>
          </div>
        </p>
      </div>

      <br>
      <h3>Example</h3>
      <div ng-switch="benchmark.implementation">

        <table ng-switch-when="tableOptimized" class="table">
          <thead>
            <tr>
              <th>todo #id</th>
              <th>completed?</th>
              <th>urgent?</th>
              <th>important?</th>
            </tr>
          </thead>
          <tbody>
            <tr ng-repeat="todo in benchmark.todos track by todo.id"
              ng-class="todo.completed && 'active'"
              ng-class-even="todo.completed && todo.important && 'gold'"
              ng-class-odd="todo.completed && todo.important && 'silver'"
              >
                <td>#{{todo.id}}</td>
                <td>{{todo.completed}}</td>
                <td ng-class="todo.urgent && 'danger'">{{todo.urgent}}</td>
                <td ng-class="todo.important && 'success'">{{todo.important}}</td>
            </tr>
          </tbody>
        </table>

        <table ng-switch-when="table" class="table">
          <thead>
            <tr>
              <th>todo #id</th>
              <th>completed?</th>
              <th>urgent?</th>
              <th>important?</th>
            </tr>
          </thead>
          <tbody>
            <tr ng-repeat="todo in benchmark.todos track by todo.id"
              ng-class="{active: todo.completed}"
              ng-class-even="{gold: todo.completed && todo.important}"
              ng-class-odd="{silver: todo.completed && todo.important}"
              >
                <td>#{{todo.id}}</td>
                <td>{{todo.completed}}</td>
                <td ng-class="{danger: todo.urgent}">{{todo.urgent}}</td>
                <td ng-class="{success: todo.important}">{{todo.important}}</td>
            </tr>
          </tbody>
        </table>

        <ul ng-switch-when="list">
          <li ng-repeat="todo in benchmark.todos track by todo.id"
            ng-class="{
              completed: todo.completed,
              urgent: todo.urgent,
              important: todo.important
            }">#{{todo.id}}</li>
        </ul>

        <div ng-switch-when="singleOptimized"
          class="panel"
          ng-class="{'panel-success': !!benchmark.todos, 'panel-danger': !benchmark.todos}">
            <div class="panel-heading">
              <h3 class="panel-title">Information</h3>
            </div>
            <div class="panel-body"> The title is green because there are todos... </div>
        </div>

        <div ng-switch-when="single"
          class="panel"
          ng-class="{'panel-success': benchmark.todos, 'panel-danger': !benchmark.todos}">
            <div class="panel-heading">
              <h3 class="panel-title">Information</h3>
            </div>
            <div class="panel-body"> The title is green because there are todos... </div>
        </div>
      </div>

    </div>
  </div>
</div>
<br><br><br>