vue 滑动吸顶锚点定位 vue滑动吸顶及锚点定位的代码实例

时间:2021-04-22 因为有你s 人气:2

在上篇文章给大家介绍了vue实现吸顶、锚点和滚动高亮按钮效果感兴趣的朋友可以点击查看https:

今天给大家继续分享vue滑动吸顶及锚点定位的代码，具体内容如下所示：

Vue项目中需要实现滑动吸顶以及锚点定位功能。template代码如下:

<template>
<div class="main">
 <div id='menu'>
  <ul>
   <li v-for="item in tabList" @click='clickTab'></li>
  </ul>
 </div>
 <div id='div1'></div>
 <div id='div2'></div>
 <div id='div3'></div>
</div> 
</template>

(1)滑动吸顶:

监听scroll事件，获取页面的滚动距离，一旦滚动距离大于目标值，实现滑动吸顶功能。

public isFixed = false;
public mounted() {
 this.menuTop = (document.getElementById('menu') as any).offsetTop;
 window.addEventListener('scroll', this.handleScroll);
 }
public handleScroll() {
 const scrollTop = document.documentElement.scrollTop || document.body.scrollTop; // 获取滑动距离
 if (scrollTop < this.menuTop ) {
  this.isFixed = false;
 } else {
  this.isFixed = true; // 设置fixed定位
 }
 }
public destroyed() {
 window.removeEventListener('scroll', this.handleScroll);
}

（2）锚点定位。点击tab，设置页面滚动距离。

public clickTab(index: number) {
 this.activeIndex = index;
 this.isFixed = true;
 const menuHeight= (document.getElementById('menu') as any).offsetHeight;
 const div1= (document.getElementById('div1') as any).offsetTop;
 const div2= (document.getElementById('div2') as any).offsetTop;
 const div3= (document.getElementById('div3') as any).offsetTop;
 const div4= (document.getElementById('div4') as any).offsetTop;
 switch (index) {
  case 0: document.body.scrollTop = document.documentElement.scrollTop = div1 - menuHeight; break;
  case 1: document.body.scrollTop = document.documentElement.scrollTop = div2 - menuHeight; break;
  case 2: document.body.scrollTop = document.documentElement.scrollTop = div3 - menuHeight; break;
  case 3: document.body.scrollTop = document.documentElement.scrollTop = div4 - menuHeight; break;
  default: document.body.scrollTop = document.documentElement.scrollTop = div1- menuHeight;
 }
 }

总结

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