vue 使用async写数字动态加载效果案例

<interval-number :number-content="blockHeight" v-if="blockHeight>0"></interval-number>
 
import IntervalNumber from './IntervalNumber.vue'
components:{
  IntervalNumber,
}

<template>
 <span class="IntervalNumber">
 {{ counter }}
 </span>
</template>
<script>
export default {
 name: 'IntervalNumber',
 props: {
  numberContent: Number
 },
 data () {
  return {
   counter: this.numberContent,
   timeTicket: null,
  }
 },
 mounted(){
  let time = 1000 //ms 数字滚动总时间
  let delayTime = 30 // ms 数字滚动间隔时间
  let divisions = time / delayTime
 
  this.asyncPrint(this.counter, divisions, delayTime)
  
 },
 methods:{
  timeOut(ms) {
   return new Promise((resolve) => {
    this.timeTicket = setTimeout(resolve, ms)
   })
  },
  async asyncPrint(value, divisions, ms){
   for(let i=0; i< divisions; i++){
    
    try {
     await this.timeOut(ms);
    } catch (err) {
     console.log(err)
    }
 
    this.counter = Math.round(value / divisions * i);
   }
   
   this.counter = this.numberContent
 
   clearTimeout(this.timeTicket)
   this.timeTicket = null
  }
 }
}
</script>

import Vue from 'vue'
import VueAnimateNumber from 'vue-animate-number'
Vue.use(VueAnimateNumber)

<template>
 <div>
 
  <animate-number
   from="1" 
   to="10" 
   duration="1000" 
   easing="easeOutQuad"
   :formatter="formatter"
  ></animate-number>
  
   <!-- 最简单的案例，from是开始值，to是结束值 -->
  <animate-number from="1" to="10"></animate-number>
  
  <animate-number ref="myNum" from="0" to="10" mode="manual" :formatter="formatter"></animate-number><br>
  
   <!-- 也可以通过按钮去触发-->
  <button type="button" @click="startAnimate()"> animate! </button>
 </div>
</template>

<script>
 export default {
  methods: {
   formatter: function (num) {
    return num.toFixed(2)
   },

   startAnimate: function () {
    this.$refs.myNum.start()
   }
  }
 }
</script>