How to Use Computed Props in Vue.js with TypeScript?

Computed Props is a Vue.js feature that allows developers to compute properties using arguments passed to a component. You will learn how to use computed properties in Vue.js and TypeScript by working through an example that illustrates how it can be used.

computed vue typescript

By

Lucky Lapwing on Jul 30, 2020

<template>
    <div>
        <input type="text" name="Test Value" id="" v-model="text">

        <label>{{label}}</label>
    </div>

</template>

<script lang="ts">
import { Component, Vue, Watch } from "vue-property-decorator";

@Component({})
export default class About extends Vue {
    private text = "test";

    get label() {
        return this.text;
    }
}
</script>


// compotion-api style vue3 default

<script lang="ts">
import { defineComponent, ref, computed } from "@vue/composition-api";

export default defineComponent({
  setup() {
    const text = ref("test");

    const label = computed(() => {
      return text.value;
    });

    return {
      text,
      label
    };
  }
});
</script>

Source: stackoverflow.com

0

Using computed props allows you to maintain a consistent state across the application.

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