前言

1）使用技术：

vue3.2 + Ts

2）组件接收参数：

参数	类型	意义	是否可选
value	number	数值大小	必填
duration	number	递增动画持续时间（单位：s）	可选，默认为2
isDecimal	boolean	是否显示为小数	可选，默认为false

3）补充：
组件本身没有过多样式，想实现不同样式可以在调用组件时自定义设置样式

源码

<template>
    <div>
        <span ref="numberDom">0</span>
    </div>
</template>

<script setup lang="ts">
import { ref, onMounted, onBeforeUpdate, onBeforeUnmount, withDefaults, defineProps } from 'vue';

/**
 * @param value 数值大小 
 * @param duration 递增动画持续时间；
 * @param isDecimal 是否显示为小数
 */
const props = withDefaults(defineProps<{
    value: number,
    duration: number,
    isDecimal: boolean

}>(), {
    duration: 2,
    isDecimal: false
})

let timer: number  | null = null
const timerDelay = 5
const numberDom = ref<any>(null)

onMounted(() => {
    numericalIncrement(numberDom.value)
})
onBeforeUpdate(() => {
    if (timer) {
        clearInterval(timer!)
        timer = null
    }
    numericalIncrement(numberDom.value)
})
onBeforeUnmount(() => {
    if (timer) {
        clearInterval(timer!)
        timer = null
    }
})

/**
 * @method
 * @param ele 数值对应的dom元素
 * @desc 数值递增动画
 */
const numericalIncrement = (ele: Element) => {
    const step = (props.value * timerDelay) / (props.duration * 1000)
    let current: number = 0
    let start: number = 0
    let flag: boolean = false
    timer = setInterval(() => {
        start += step
        if (start >= props.value) {
            flag = props.isDecimal
            clearInterval(timer!)
            start = props.value
            timer = null
        }
        current = start
        if (flag) {
            ele.innerHTML = current
                .toString()
                .replace(/(\d)(?=(?:\d{3}[+]?)+$)/g, '$1,')
        } else {
            ele.innerHTML = current
                .toFixed(0) 
                .toString()
                .replace(/(\d)(?=(?:\d{3}[+]?)+$)/g, '$1,')
        }
    }, timerDelay)
}
</script>

<style scoped>
div {
    display: inline-block;
}
</style>

举个例子：

1）使用代码

<template>
  <div>
    <NumericalIncrement :duration="2" :is-decimal="true" :value="val" class="num"></NumericalIncrement>
  </div>
</template>

<script setup lang="ts">
import NumericalIncrement from './components/NumericalIncrement.vue'
import {ref,onMounted} from 'vue';
const val = ref(110)
onMounted(()=>{
  setTimeout(()=>{
    val.value=200
  },3000)
})
</script>
 
<style scoped>
.num {
  min-width: 40px;
  text-align: center;
  font-size: 20px;
  background-color: orange;
  color:#fff;
}
</style>