How to forceUpdate in setup in vue3?

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How to forceUpdate in setup in vue3?

When use Options Api, I can use this.$forceUpdate() to forceUpdate.How to do the same in setup function in vue3?

vuejs3 vue.js
1 Answers

<script lang="ts">
import { defineComponent, getCurrentInstance } from "vue";

export default defineComponent({
  setup() {
    const { ctx: _this }: any = getCurrentInstance()
    let arr = [1]
    const handleClick = () => {
      arr.push(2)
      _this.$forceUpdate()
    }
    return {
      arr
    };
  },
});
</script>
<template>
  <div>
    <div>{{arr}}</div>
    <button @click="handleClick">add</button>
  </div>
</template>

done

Admin1
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