vue实现跑马灯的效果

div.test1(ref="test1")
  p.test(ref="test") 跑马灯，跑起来，嗨起来~~hello world 你好世界 世界你好哇

test () {
  let boxWidth = this.$refs.test1.offsetWidth
  let testWidth = this.$refs.test.scrollWidth

  if (testWidth > boxWidth) {
    this.testTimer = setInterval(() => {
      if (this.$refs.test1.scrollLeft < testWidth - boxWidth) {
        this.$refs.test1.scrollLeft++
      } else {
        clearInterval(this.testTimer)
        this.$refs.test1.scrollLeft = 0
        this.test()
      }
    }, 100)
  }
},

.test1 {
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  width: 6rem;
  background: #000;
}