点击按钮回顶

<template lang="html"> <div class="gotop-box"> <i @click="gotop"class="icon topIcon"></i> </div></template><script>export default {methods: { gotop: function () { // 点击回顶按钮 返回顶部 setTimeout(()=>{ document.body.scrollTop = 0 document.documentElement.scrollTop = 0 },1000) } }}window.onscroll = function() {const scrollTop = document.documentElement.scrollTop || document.body.scrollTop const goTop= document.querySelector('.gotop-box') if (scrollTop >200) { goTop.style.display = 'block' } else { goTop.style.display = 'none' }}</script><style lang="css">.topIcon { position: fixed; bottom: 5rem; right: 1rem; width: 2rem; height: 2rem; border-radius: 50%; background:url(../assets/images/gotop.png)center center no-repeat; background-size: cover;}</style>

固定导航栏案例

<template> <div> <div id="topPart">顶部距离</div> <div id="navBar" :class="{isFixed:istabBar}">固定导航栏</div> <div id="mainPart"> <ul> <li>内容部分</li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> </ul> </div> </div></template><script> export default { data () { return { istabBar: false } }, methods: { // 添加一个方法 兼容 handleScroll () { let scrollTop = window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop; // 固定导航栏 let topBar = document.querySelector("#topPart"); let navBar = document.querySelector("#navBar"); let mainPart = document.querySelector("#mainPart"); if (scrollTop > topBar.offsetHeight){ this.istabBar = true mainPart.style.paddingTop = navBar.offsetHeight + "px"; } else { this.istabBar = false mainPart.style.paddingTop = "0px"; } } }, mounted () { window.addEventListener('scroll', this.handleScroll); // Dom树加载完毕 }, destroyed () { window.removeEventListener('scroll', this.handleScroll) // 销毁页面时清除 } }</script><style> #topPart{ width: 100%; height: 100px; background-color: yellow; } .isFixed { position: fixed; top: 0; z-index: 10; } #navBar { width: 100%; height: 50px; background-color: red; } #mainPart { width: 100%; } #mainPart ul { width: 100%; } #mainPart ul li { width: 100%; height: 40px; background-color: orange; margin-bottom: 10px; }</style>

以上这篇vue 中固定导航栏的实例代码就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。