示例图
引入组件
import autoScroll from './components/autoMove.vue'
页面使用组件
<div class="pro-body"> <autoScroll :list="list" :speed="0.5" :waitTime="2000" :singleHeight="100" > <!-- 移动的主体块 可替换成别的 --> <div class="t-item"> <div class="t-value">示例样式</div> <div class="t-value">示例样式</div> <div class="t-value">示例样式</div> <div class="t-value">示例样式</div> <div class="t-value">示例样式</div> <div class="t-value">示例样式</div> </div> </autoScroll> </div> // 部分样式 <style scoped lang="scss"> .pro-body { height: 80%; .t-item { width: 100%; } .t-value { text-align: center; height: 2.5rem; line-height: 2.5rem; background: linear-gradient( 90deg, rgba(129, 228, 251, 0) 0%, rgb(113 219 249 / 0.2) 15%, rgb(8 144 255 / 0.2) 52%, rgb(74 197 245 / 0.2) 83%, rgba(74, 197, 245, 0) 100% ); border-radius: 3px; margin-top: 0.4rem; color: #133554; font-size: 1.1rem; font-weight: 400; overflow: hidden; } } </style>
组件代码
<template> <div class="scroll-outer" ref="outer" @mouseover="onMouseover" @mouseleave="onMouseleave"> <div class="scroll-inner-box" ref="scrollBox"> <div class="scroll-item-box" ref="scrollItemBox"> <slot></slot> </div> <div v-if="showSecond" class="scroll-item-box"> <slot></slot> </div> </div> </div> </template> <script> export default { name: "my-auto-scroll", props: { list: { type: Array, // default: () => [ // { name: "张三1" }, // { name: "张三2" }, // { name: "张三3" }, // { name: "张三4" }, // { name: "张三5" }, // { name: "张三6" }, // { name: "张三7" }, // { name: "张三8" }, // { name: "张三9" }, // { name: "张三10" }, // ], }, speed: { type: Number, default: 0.1, }, //滚动作单步运动时的单纯运动距离 singleHeight: { type: Number, default: 0, }, //单步运动的时间间隔 waitTime: { type: Number, default: 0, }, }, data() { return { rafId: null, y: 0, showSecond: false, controleHeight: 0, } }, watch: { list: { handler(newVal) { var that = this; this.$nextTick(() => { // console.log(newVal); if (newVal && newVal.length > 0) { let scrollBox = that.$refs.scrollBox; let outer = that.$refs.outer; if (this.myReq) { cancelAnimationFrame(this.myReq); } // 开启动画 if (this.canRun()) this.reqAnimationFrame(); // this.reqAnimationFrame(); // 手动滚动到底部时滚动条重置到最上边,同时滚动盒子重置为top:0 outer.addEventListener("scroll", function () { if ( outer.scrollTop + outer.clientHeight + 4 >= outer.scrollHeight ) { outer.scrollTop = 0; that.y = 0; scrollBox.style.top = 0; } }) } }) }, deep: true, immediate: true, } }, mounted() { // window.addEventListener("resize", this.listenResizeFn); }, methods: { listenResizeFn() { cancelAnimationFrame(this.myReq); if (this.canRun()) this.reqAnimationFrame(); }, onm ouseover() { clearTimeout(this.timer); cancelAnimationFrame(this.myReq); }, onm ouseleave() { if (this.canRun()) this.reqAnimationFrame(); }, canRun() { let scrollItemBox = this.$refs.scrollItemBox; let scrollBox = this.$refs.scrollBox; let outer = this.$refs.outer; // 开启动画条件:滚动盒子(scrollBox)高度高于外层容器(outer)高度 if (outer.offsetHeight >= scrollItemBox.offsetHeight) { this.showSecond = false; outer.scrollTop = 0; this.y = 0; scrollBox.style.top = 0; return false; } else { this.showSecond = true; return true; } }, //获取dom元素的高度:content+padding+margin+border getComputedHeight(dom) { let computedStyle = getComputedStyle(dom); let computedHeight = dom.offsetHeight + parseFloat(computedStyle.marginTop) + parseFloat(computedStyle.marginBottom); return computedHeight; }, reqAnimationFrame() { //外层容器 let outer = this.$refs.outer; //滚动盒子 let scrollBox = this.$refs.scrollBox; //滚动盒子下边的第一个scroll-item-box, let scrollItemBox = this.$refs.scrollItemBox; //滚动速度 this.speed = this.speed > 1 ? 1 : this.speed < 0 ? 0.1 : this.speed; //取第一个scrollItemBox高度 let definedHeight = this.getComputedHeight(scrollItemBox); //持续滚动 this.y = this.y + this.speed; scrollBox.style.top = -this.y + "px"; //====添加滚动间隔控制====开始 if (this.singleHeight >= 20 && this.waitTime > 500) { if (this.controleHeight >= this.singleHeight) { cancelAnimationFrame(this.myReq); this.controleHeight = 0; this.timer = setTimeout(() => { if (this.canRun) this.reqAnimationFrame(); }, this.waitTime); return; } else { // 一次移动高度未达到指定距离继续执行动画 this.controleHeight += this.speed; } } //====添加滚动间隔控制====结束 //当滚动到第一个scroll-item-box高度时scrollBox重置为top:0,视觉上是无缝滚动 if (this.y >= definedHeight) { this.y = 0; } this.myReq = window.requestAnimationFrame(this.reqAnimationFrame); }, }, destroyed() { window.removeEventListener("resize", this.listenResizeFn); cancelAnimationFrame(this.myReq); if (this.timer) clearTimeout(this.timer); }, } </script> <style lang="scss"> .scroll-outer { height: 100%; overflow-x: hidden; position: relative; &::-webkit-scrollbar { width: 0.3vw; } &:hover::-webkit-scrollbar-track { -webkit-box-shadow: inset 0 0 0.1vw rgba(0, 0, 0, 0.3); border-radius: 0.1vw; background-color: #295099; opacity: 1; // display: none; } &:hover::-webkit-scrollbar-thumb { opacity: 1; border-radius: 0.1vw; -webkit-box-shadow: inset 0 0 0.1vw rgba(0, 0, 0, 0.3); background-color: #0ba9ea; } } .scroll-inner-box { height: auto; position: absolute; width: 100%; top: 0; left: 0; } </style>
标签:outer,name,refs,字幕,scrollBox,let,自下,滚动,区块 From: https://www.cnblogs.com/qiuqiu001/p/17824298.html