Vue中使用定时器setInterval

<template>
  <section>
    <h1>hello world~</h1>
  </section>
</template>
<script>
  export default {
    data() {
      return {
        timer: '',
        value: 0
      };
    },
    methods: {
      get() {
        this.value ++;
        console.log(this.value);
      }
    },
    mounted() {
      this.timer = setInterval(this.get, 1000);
    },
    beforeDestroy() {
      clearInterval(this.timer);
    }
  };
</script>