POST requests for form submission in Vue - Mini Project: Build & Apply

POST requests for form submission

📖 Scenario: You are building a simple contact form on a website. When a user fills in their name and message, the form should send this data to a server using a POST request.

🎯 Goal: Create a Vue component that collects user input for name and message, then sends this data as a POST request when the form is submitted.

📋 What You'll Learn

Use Vue 3 Composition API with <script setup>

Create reactive variables for form data

Add a function to handle form submission

Send form data as JSON using fetch with POST method

Bind form inputs to reactive variables

Use semantic HTML form elements with accessibility in mind

💡 Why This Matters

🌍 Real World

Forms are everywhere on websites and apps. Sending data with POST requests is how user input reaches servers for processing.

💼 Career

Understanding form submission and POST requests is essential for frontend developers working with APIs and building interactive web applications.

1

Set up reactive form data

Inside a <script setup> block, import ref from 'vue' and create two reactive variables called name and message, both initialized as empty strings.

Vue

  
    
  



// Import ref and create reactive variables name and message
// Your code here

Hint

Use import { ref } from 'vue' and then const name = ref('') and const message = ref('').

2

Add a submit handler function

Add a function called submitForm inside the <script setup> block. This function should prevent the default form submission behavior by accepting an event parameter and calling event.preventDefault().

Vue

  
    
  



import { ref } from 'vue'

const name = ref('')
const message = ref('')

// Add submitForm function that prevents default form submission
// Your code here

Hint

Define function submitForm(event) and call event.preventDefault() inside it.

3

Send form data with POST request

Inside the submitForm function, add code to send a POST request to 'https://example.com/api/contact' using fetch. The request should have headers specifying 'Content-Type': 'application/json' and the body should be a JSON string containing name.value and message.value. Use await and mark submitForm as async.

Vue

  
    
  



import { ref } from 'vue'

const name = ref('')
const message = ref('')

// Make submitForm async and send POST request with fetch
async function submitForm(event) {
  event.preventDefault()
  // Your code here
}

Hint

Use await fetch with method 'POST', headers for JSON, and body: JSON.stringify({ name: name.value, message: message.value }).

4

Bind inputs and connect submit handler

In the