In the vue3 v-for loop, the type of 'Item' is considered to be 'unknown'

Question

In the vue3 v-for loop, the type of 'Item' is considered to be 'unknown'

https://i.sstatic.net/irjFP.png

Currently, I am facing an issue with a v-for loop in my Vue3 + TypeScript project. The error message keeps appearing despite following the correct syntax for passing props to a component. I have included the relevant code snippet below:

<script setup lang="ts">
import { ref } from "vue"

defineProps({
  margin: {
    type: Number,
    default: 1
  },
  futurecashflow: {
    type: Array,
    default: [1,2]
  },
});
</script>

I have tried various solutions, but this error has unexpectedly surfaced recently within the last week. Any insights or suggestions on resolving this issue would be greatly appreciated.

javascript typescript vue.js

Answer 1

Answer №1

If TypeScript is part of your toolkit, leveraging the exclusive TypeScript features in Vue is ideal. Start by defining a props interface and setting default values using withDefaults:

interface Props {
    spacing: number;
    upcomingEvents: string[];
}

const properties = withDefaults(defineProps<Props>(), {
    spacing: 1,
    upcomingEvents: ['Event A', 'Event B'],
});

Answer 2

If TypeScript is part of your toolkit, leveraging the exclusive TypeScript features in Vue is ideal. Start by defining a props interface and setting default values using withDefaults:

interface Props {
    spacing: number;
    upcomingEvents: string[];
}

const properties = withDefaults(defineProps<Props>(), {
    spacing: 1,
    upcomingEvents: ['Event A', 'Event B'],
});

Answer 3

Answer №2

My solution involved adding the necessary props and then accessing them through props.futurecashflow

import {ref,defineProps} from "vue"


let props= defineProps({
  margin: {
    type: Number,
    default: 1
  },
  discountrate: {
    type: Number,
    default: 1
  },

  futurecashflow: {
    default: [1,2]
  },
  
});

To iterate using v-for, I used the following syntax

<tbody class="table-auto" v-for="(item, index) in props.futurecashflow">

Answer 4

My solution involved adding the necessary props and then accessing them through props.futurecashflow

import {ref,defineProps} from "vue"


let props= defineProps({
  margin: {
    type: Number,
    default: 1
  },
  discountrate: {
    type: Number,
    default: 1
  },

  futurecashflow: {
    default: [1,2]
  },
  
});

To iterate using v-for, I used the following syntax

<tbody class="table-auto" v-for="(item, index) in props.futurecashflow">

In the vue3 v-for loop, the type of 'Item' is considered to be 'unknown'

Answer №1

Answer №2

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