Vue backtop组件如何实现成长尾词？

本文共计363个文字，预计阅读时间需要2分钟。

效果：实现一个返回顶部的按钮，当页面滚动到一定位置时显示。

代码：javascripttemplate div class=back-top div img src=imgsrc class=line :class={'isHide': !firstShow, 'isShow': firstShow} :style={display: (firstShow ? 'block' : 'none')} @click=backTop /div /divtemplate scriptexport default { name: backTop, data() { return { firstShow: false }; }, methods: { backTop() { window.scrollTo(0, 0); } }}

效果：

代码：

<template> <div class="back-top"> <div > <img src="imgsrc" class="line" :class="isHide? 'isHide': 'isShow'" :style="{display: (firstShow? 'block': 'none')}" @click="backTop"> </div> </div> </template> <script> export default { name: "backTop", data(){ return { firstShow: false,//初始化隐藏组件 isHide: false, scrollFLag: true, } }, created() { document.addEventListener('scroll', () => { let scroll = document.documentElement.scrollTop if(scroll > 200){ this.isHide = false this.firstShow = true }else{ this.isHide = true } }) }, methods: { backTop(){ if(this.scrollFLag){ this.scrollFLag = false //屏幕高度 let scroll = document.documentElement.scrollTop let scrollTimer = setInterval(()=> { scroll -= 50 document.documentElement.scrollTop = Math.max(scroll, 0) if( scroll <= 0){ clearInterval(scrollTimer) } }, 10) this.scrollFLag = true } }, }, } </script> <style scoped lang="scss"> .back-top{ position: fixed; top: 0; right: 10vw; width: 20px; height: 500px; z-index: 200; .line{ width: 12vw; height: 100%; z-index: 20; cursor: pointer; opacity: 0.8; transform: translateY(-100%); &:hover{ opacity: 1; } } .isShow{ animation: back-top-move 0.5s forwards linear, back-top-yurayura 2s 0.6s forwards linear infinite; } .isHide{ animation: back-top-hide 0.5s forwards linear; } } @keyframes back-top-hide { from { transform: translateY(0); } to { transform: translateY(-100%); } } @keyframes back-top-move { to { transform: translateY(0); } } @keyframes back-top-yurayura { 0%{transform-origin: top center;transform: rotate(0)} 25%{transform-origin: top center;transform: rotate(2deg)} 75%{transform-origin: top center;transform: rotate(-2deg)} 100%{transform-origin: top center;transform: rotate(0)} } </style>

到此这篇关于vue backtop组件的实现完整代码的文章就介绍到这了,更多相关vue backtop组件内容请搜索自由互联以前的文章或继续浏览下面的相关文章希望大家以后多多支持自由互联！