Checkbox and radio bindings in Svelte - Mini Project: Build & Apply

Checkbox and Radio Bindings in Svelte

📖 Scenario: You are building a simple survey form for a website. The form asks users to select their favorite fruits using checkboxes and choose their preferred contact method using radio buttons.

🎯 Goal: Create a Svelte component that binds checkboxes to an array of selected fruits and radio buttons to a single selected contact method. The component should update the selections reactively as the user interacts.

📋 What You'll Learn

Create an array variable selectedFruits to hold selected fruit names.

Create a string variable contactMethod to hold the chosen contact method.

Bind multiple checkboxes to selectedFruits using Svelte's bind:group.

Bind radio buttons to contactMethod using Svelte's bind:group.

Use semantic HTML with accessible labels for all inputs.

💡 Why This Matters

🌍 Real World

Forms with checkboxes and radio buttons are common in surveys, preferences, and settings pages on websites and apps.

💼 Career

Understanding how to bind inputs to variables in frameworks like Svelte is essential for building interactive user interfaces in modern web development.

1

Set up the selected fruits array

Create a variable called selectedFruits and set it to an empty array [].

Svelte

# Create a variable called selectedFruits and set it to an empty array []

# Your code here

Need a hint?

Use let selectedFruits = []; to create an empty array variable.

2

Add the contact method variable

Create a variable called contactMethod and set it to an empty string "".

Svelte

let selectedFruits = [];

# Create a variable called contactMethod and set it to an empty string ""

# Your code here

Need a hint?

Use let contactMethod = ""; to create a string variable for the radio buttons.

3

Bind checkboxes to selectedFruits

Add three checkboxes with labels for Apple, Banana, and Cherry. Bind their group to the variable selectedFruits using bind:group={selectedFruits}. Use value attributes exactly as "Apple", "Banana", and "Cherry".

Svelte

let selectedFruits = [];
let contactMethod = "";



# Your code here

Need a hint?

Use <input type="checkbox" bind:group={selectedFruits} value="Apple" /> for each fruit checkbox.

4

Bind radio buttons to contactMethod

Add two radio buttons with labels for Email and Phone. Bind their group to the variable contactMethod using bind:group={contactMethod}. Use value attributes exactly as "Email" and "Phone".

Svelte

let selectedFruits = [];
let contactMethod = "";

 Apple
 Banana
 Cherry



# Your code here

Need a hint?

Use <input type="radio" bind:group={contactMethod} value="Email" /> for each radio button.