这篇文章主要讲解了vue滑动吸顶及锚点定位的用法,内容清晰明了,对此有兴趣的小伙伴可以学习一下,相信大家阅读完之后会有帮助。
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;
}
}
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