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

参考示例 - ES5

<script>
  function Student(name, gender, score) {
    this.name = name;
    this.gender = gender;
    this.score = score;
    this.quality = 100;

    this.sumScore = function () {
      return this.score + this.quality;
    }
  }

  var whh = new Student('王花花', '男', 89);
  var lsd = new Student('李拴蛋', '女', 40);

  console.log(whh.name, whh.sumScore())
  console.log(lsd.name, lsd.sumScore())
</script>

参考示例 - ES6

<script>
  class Student {
    constructor(name, gender, score) {
      this.name = name;
      this.gender = gender;
      this.score = score;
      this.quality = 100;
    }

    sumScore() {
      return this.score + this.quality;
    }
  }

  var whh = new Student('王花花', '男', 89);
  var lsd = new Student('李拴蛋', '女', 40);

  whh.score = 100;
  console.log(whh.name, whh.sumScore())
  console.log(lsd.name, lsd.sumScore())
</script>
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