日期: 2020-06-22 17:50:07
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://www.jb51.net/article/172365.htm
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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