npm install vue-animate-number

main.js

<template>
  <div>
    <animate-number
      from="1" 
      to="10" 
      duration="1000" 
      easing="easeOutQuad"
      :formatter="formatter"
    ></animate-number>

    <!-- parseInt as default formatter -->
    <animate-number from="1" to="10"></animate-number>

    <!-- manually start animation by click -->
    <animate-number ref="myNum" from="0" to="10" mode="manual" :formatter="formatter"></animate-number><br>

    <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>

API

<animate-number 
  mode="auto"
  duration="1000"
  :from="from" 
  :to="to"
  from-color="#44CC00" 
  to-color="#ec4949"
  :formatter="formatter" 
  :animate-end="animateEnd">
</animate-number>

效果图