// html代码 <ul> <li :class="{'number-item': !isNaN(item) }" v-for="(item,index) in computeNumber" :key="index" > <span v-if="!isNaN(item)"> <i ref="numberItem">0123456789</i> </span> <span v-else>{{item}}</span> </li> </ul> // CSS代码 .number-item { width: 50px; background: url(./number-bg.png) no-repeat center center; background-size:100% 100%; & > span { position: relative; display: inline-block; margin-right: 10px; width: 100%; height: 100%; writing-mode: vertical-rl; text-orientation: upright; overflow: hidden; & > i { position: absolute; top: 0; left: 50%; transform: translate(-50%,0); transition: transform 0.5s ease-in-out; letter-spacing: 10px; } } }
页面渲染效果：
数字随机增长，模拟轮询效果
页面渲染完毕后，我们来让数字滚动起来，设计如下两个方法，其中increaseNumber需要在Vue生命周期mounted函数中调用
// 定时增长数字 increaseNumber () { let self = this this.timer = setInterval(() => { self.newNumber = self.newNumber + getRandomNumber(1, 100) self.setNumberTransform() }, 3000) }, // 设置每一位数字的偏移 setNumberTransform () { let numberItems = this.$refs.numberItem let numberArr = this.computeNumber.filter(item => !isNaN(item)) for (let index = 0; index < numberItems.length; index++) { let elem = numberItems[index] elem.style.transform = `translate(-50%, -${numberArr[index] * 10}%)` } }
最终实现效果：
完整代码如下：
<template> <div> <h3>订单总量</h3> <div> <li :class="{'number-item': !isNaN(item), 'mark-item': isNaN(item) }" v-for="(item,index) in orderNum" :key="index"> <span v-if="!isNaN(item)"> <i ref="numberItem">0123456789</i> </span> <span v-else>{{item}}</span> </li> </div> </div> </template> <script> export default { data() { return { orderNum: ['0', '0', ',', '0', '0', '0', ',', '0', '0', '0'], // 默认订单总数 } } mounted: { this.toOrderNum(num) // 这里输入数字即可调用 }, methods: { // 设置文字滚动 setNumberTransform () { const numberItems = this.$refs.numberItem // 拿到数字的ref，计算元素数量 const numberArr = this.orderNum.filter(item => !isNaN(item)) // 结合CSS 对数字字符进行滚动,显示订单数量 for (let index = 0; index < numberItems.length; index++) { const elem = numberItems[index] elem.style.transform = `translate(-50%, -${numberArr[index] * 10}%)` } }, // 处理总订单数字 toOrderNum(num) { num = num.toString() // 把订单数变成字符串 if (num.length < 8) { num = '0' + num // 如未满八位数，添加"0"补位 this.toOrderNum(num) // 递归添加"0"补位 } else if (num.length === 8) { // 订单数中加入逗号 num = num.slice(0, 2) + ',' + num.slice(2, 5) + ',' + num.slice(5, 8) this.orderNum = num.split('') // 将其便变成数据，渲染至滚动数组 } else { // 订单总量数字超过八位显示异常 this.$message.warning('订单总量数字过大，显示异常，请联系客服') } }, } } </script> <style scoped lang='scss'> /*订单总量滚动数字设置*/ .box-item { position: relative; height: 100px; font-size: 54px; line-height: 41px; text-align: center; list-style: none; color: #2D7CFF; writing-mode: vertical-lr; text-orientation: upright; /*文字禁止编辑*/ -moz-user-select: none; /*火狐*/ -webkit-user-select: none; /*webkit浏览器*/ -ms-user-select: none; /*IE10*/ -khtml-user-select: none; /*早期浏览器*/ user-select: none; /* overflow: hidden; */ } /* 默认逗号设置 */ .mark-item { width: 10px; height: 100px; margin-right: 5px; line-height: 10px; font-size: 48px; position: relative; & > span { position: absolute; width: 100%; bottom: 0; writing-mode: vertical-rl; text-orientation: upright; } } /*滚动数字设置*/ .number-item { width: 41px; height: 75px; background: #ccc; list-style: none; margin-right: 5px; background:rgba(250,250,250,1); border-radius:4px; border:1px solid rgba(221,221,221,1); & > span { position: relative; display: inline-block; margin-right: 10px; width: 100%; height: 100%; writing-mode: vertical-rl; text-orientation: upright; overflow: hidden; & > i { font-style: normal; position: absolute; top: 11px; left: 50%; transform: translate(-50%,0); transition: transform 1s ease-in-out; letter-spacing: 10px; } } } .number-item:last-child { margin-right: 0; } </style>
总结