回到顶部

先在data中定义to_top=’‘
mounted() {
window.addEventListener(“scroll”, this.scrollHandle); //绑定页面滚动事件
},
//获取页面滚动高度
methods: {
scrollHandle(e) {
let top = e.srcElement.scrollingElement.scrollTop; // 获取页面滚动高度
this.to_top = top;
},
backTop(){

  const timer = setInterval(() => {
    const ispeed = Math.floor(-this.to_top / 5);
    document.documentElement.scrollTop = document.body.scrollTop =
      this.to_top + ispeed;
     
    if (this.to_top === 0) {
     
      clearInterval(timer);
    }
  }, 16);
},

},