[: currentTime | date:'mm:ss' :] [: timeLeft | date:'mm:ss' :]

参考示例 - ES5

<script>
  function Student () {
    this.intro = '我是个学生';
  }

  function Teacher () {
    this.intro = '我是个老师';
  }

  /**
   * 生产学生
   * @param {string} factory
   */
  function studentFactory () {
    return new Student();
  }

  /**
   * 生产老师
   * @param {string} factory
   */
  function teacherFactory () {
    return new Teacher();
  }

  /**
   * 选择工厂
   * @param {string} factory
   */
  function userProducer (factory) {
    // 判断工厂类型
    switch (factory) {
      case 'student':
        return studentFactory;
        break;
      case 'teacher':
        return teacherFactory;
        break;
      default:
        throw '没有这个工厂';
        break;
    }
  }

  var factory = userProducer('teacher');
  var t       = factory('王花花', '特级');
  console.log(t);
</script>
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