The v-model for two-way binding seems to be malfunctioning, with a browser error or warning stating that the use of withDirectives is restricted to render functions

Currently utilizing VITE v5.0.8.

This file is dex.html

<!doctype html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <!-- Bootstrap CSS -->
    <link href="https://cdn.jsdelivr.net/npm/<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="b6d4d9d9c2c5c2c4d7c6f68398869884">[email protected]</a>/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
    <title>Vue To Do App</title>
  </head>
  <body>

    <div id="app" class="col-md-6">
    </div>

    <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
    <script src="https://unpkg.com/vue-router@4"></script>
    <script type="module" src="/src/maindex.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="0a6865657e797e786b7a4a3f243a2438">[email protected]</a>/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
  </body>
</html> 



This pertains to the maindex.js File

import './assets/main.css'
import appdex from './components/appdex.vue';

const app = Vue.createApp(appdex)

app.mount('#app')

The contents of the appdex.vue file are as follows:

<template>
    <div id="app" class="col-md-6">
        <input v-model="value">
        {{ value }}
    </div>
      
</template>
  
<script>

export default {
    data() {
        return {
            value: ''
        }
    },

}

</script>

I anticipate that when typing in the textbox, the value variable will update simultaneously.

A warning message present in the browser reads: [Vue warn]: withDirectives can only be used inside render functions.

This marks my introduction to Stack Overflow and my recent venture into learning Javascript and Vue Js. Please bear with me for any potential mistakes in presenting my inquiries.

An issue mirroring mine was discovered at this link

The suggested solution is as follows:

Add this to hello-app/vue.config.js, see #1503 for details

config.resolve.alias.set('vue$', resolve(__dirname, 'node_modules/vue'))

However, given that I am using VITE, the node_modules/vue directory does not seem applicable as it is absent within my project structure.

Answer №1

v-model is essentially shorthand for @update:model-value. When applied to a basic input tag, it has no effect. However, if you use v-model with a component that includes a modelValue prop and emits an 'update:modelValue' event, then you can expect the value of 'modelValue' to change accordingly. Alternatively, you can also achieve similar functionality by listening to the @input event and updating your value based on that.

Answer №2

It seems like you've encountered a warning related to the usage of v-model in your Vue component. When using v-model outside of the render function, typically a warning "withDirectives can only be used inside render functions" is displayed.

You have tried to apply v-model directly on an input element in your appdex.vue file. However, it's recommended to utilize the v-model directive within the custom component or element of the render function.

To address this issue, you can make the following modifications to your appdex.vue file:

<template>
    <div id="app" class="col-md-6">
        <input :value="value" @input="updateValue">
        {{ value }}
    </div>
</template>

<script>
export default {
    data() {
        return {
            value: ''
        };
    },
    methods: {
        updateValue(event) {
            this.value = event.target.value;
        }
    }
};
</script>

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