Vue<点击导航栏滑动到指定位置>

效果图：

assignBlock.gif

方法1：

<template>
  <div class="hold">
    <!-- 跳转到指定模块 -->
    <div class="btn-box">
      <button
        v-for="(i,index) in 5"
        @click="goAssignBlock('block'+ index,50)"
        :key="index"
      >GO-{{index}}</button>
    </div>
    <div class="block" ref="block0">0</div>
    <div class="block" ref="block1">1</div>
    <div class="block" ref="block2">2</div>
    <div class="block" ref="block3">3</div>
    <div class="block" ref="block4">4</div>
  </div>
</template>

<script>
export default {
  methods: {
    //el 标签  speed 滚动速率 此处是50px 值越大滚动的越快
    goAssignBlock(el, speed) {
      let _this = this;
      let windowH = window.innerHeight; //浏览器窗口高度
      let h = this.$refs[el].offsetHeight; //模块内容高度
      let t = this.$refs[el].offsetTop; //模块相对于内容顶部的距离
      let top = t - (windowH - h) / 2; //需要滚动到的位置，若改为 t 则滚动到模块顶部位置，此处是滚动到模块相对于窗口垂直居中的位置
      let scrollTop =
        window.pageYOffset ||
        document.documentElement.scrollTop ||
        document.body.scrollTop; //滚动条距离顶部高度
      let currentTop = scrollTop; //默认滚动位置为当前滚动条位置，若改为0，则每次都会从顶部滚动到指定位置
      let requestId;
      //采用requestAnimationFrame，平滑动画
      function step() {
        //判断让滚动条向上滚还是向下滚
        if (scrollTop < top) {
          if (currentTop <= top) {
            //   window.scrollTo(x,y) y为上下滚动位置
            window.scrollTo(0, currentTop);
            requestId = window.requestAnimationFrame(step);
          } else {
            window.cancelAnimationFrame(requestId);
          }
          //向下滚动
          currentTop += speed;
        } else {
          if (top <= currentTop) {
            //注：此处 - speed 是解决居中时存在的问题，可自行设置或去掉
            window.scrollTo(0, currentTop - speed);
            requestId = window.requestAnimationFrame(step);
          } else {
            window.cancelAnimationFrame(requestId);
          }
          //向上滚动
          currentTop -= speed;
        }
      }
      window.requestAnimationFrame(step);
    }
  }
};
</script>

<style scoped>
.hold {
  width: 300px;
  margin: 0 auto;
}
.btn-box {
  background: #ccc;
  position: fixed;
  left: 60%;
}
.btn-box button {
  display: block;
  width: 100px;
  height: 50px;
  background: hsl(221, 91%, 77%);
  border: none;
  color: white;
  font-weight: bold;
  font-size: 1.5rem;
  cursor: pointer;
}
.btn-box button:hover {
  background: hsl(221, 98%, 68%);
}
.block {
  border: 1px solid white;
  width: 100%;
  height: 500px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 5rem;
  color: white;
  box-sizing: border-box;
  background: hsl(221, 98%, 68%);
}
</style>

参考地址：https://www.jianshu.com/p/f7c0b9072778

方法2：

HTML
书写方式 data-to与指定模块的id相对应

image.png
image.png

Mounted

//定义一个滚轮监听
    window.addEventListener("scroll", this.handleScroll);
    //点击侧边栏跳转到当前模块的方法
    $(".propertyDeals_line").on("click", "span", function(e) {
      var target = e.target;
      var id = $(target).data("to");
      $("html").animate({ scrollTop: $("#" + id).offset().top - 100 }, 400);
    });