数字动画，有数字的地方都能用上，拿去吧！

效果：

1、template部分

<template><div class="v-count-up">{{ dispVlaue }}</div>
</template>

2、js部分

export default {data() {return {timer: "",calcValue: 0,startTime: 0,remaining: 0,raf: "",};},props: {value: Number,startValue: {type: Number,default: 0,},time: {type: Number,default: 5000,},useease: {type: Boolean,default: true,},tofixed: {type: Number,default: 0,},separator: {type: Boolean,default: false,},reset: {type: Boolean,default: false,},},computed: {dispVlaue() {const calcValue = (this.calcValue || 0).toFixed(this.tofixed);return this.separator ? this.formatNumber(calcValue) : calcValue;},startVal() {return this.startValue > this.value ? this.value : this.startValue;},},created() {this.start();},watch: {reset() {this._reset();},},methods: {count(timestamp) {if (!this.startTime) {this.startTime = timestamp;}let progress = timestamp - this.startTime;this.remaining = this.time - progress;if (this.useease) {this.calcValue = this.easeOutExpo(progress,this.startVal,this.value - this.startVal,this.time);} else {this.calcValue =this.startVal + (this.value - this.startVal) * (progress / this.time);}if (this.calcValue > this.value) {this.calcValue = this.value;}if (progress < this.time) {this.raf = requestAnimationFrame(this.count);} else {this.$emit("end");cancelAnimationFrame(this.raf);}},start() {if (this.time > 0) {this.raf = requestAnimationFrame(this.count);} else {this.printValue();}},_reset() {this.startTime = 0;this.calcValue = 0;this.remaining = 0;this.start();},easeOutExpo(t, b, c, d) {return (c * (-Math.pow(2, (-10 * t) / d) + 1) * 1024) / 1023 + b;},printValue() {this.calcValue = this.value;},formatNumber(num) {var result, x, x1, x2, x3;result = String(num);x = result.split(".");x1 = x[0];x2 = x.length > 1 ? "." + x[1] : "";if (this.separator) {x3 = "";for (var i = 0, len = x1.length; i < len; ++i) {if (i !== 0 && i % 3 === 0) {x3 = "," + x3;}x3 = x1[len - i - 1] + x3;}x1 = x3;}return x1 + x2;},},destroyed() {cancelAnimationFrame(this.raf);},
};