Frontend Mentor - Interactive card details form solution

This is a solution to the Interactive card details form challenge on Frontend Mentor. Frontend Mentor challenges help you improve your coding skills by building realistic projects.

Table of contents

• Overview
  • The challenge
  • Screenshot
  • Links
• My process
  • Built with
  • What I learned
  • Continued development
  • Useful resources
• Author

Note: Delete this note and update the table of contents based on what sections you keep.

Overview

The challenge

Users should be able to:

• Fill in the form and see the card details update in real-time
• Receive error messages when the form is submitted if:
  • Any input field is empty
  • The card number, expiry date, or CVC fields are in the wrong format
• View the optimal layout depending on their device's screen size
• See hover, active, and focus states for interactive elements on the page

Screenshot

Links

• Solution URL: source code
• Live Site URL: website

My process

Built with

• Semantic HTML5 markup
• CSS custom properties
• Flexbox
• CSS Grid
• Mobile-first workflow
• SvelteKit - JS library
• CUBE - CSS Methodology
• tailwindcss - CSS Framework
• cleavejs - JS library

What I learned

• To disable browser automatic form validation, use the novalidate form attribute.

<form novalidate>...</form>

• How to create an object with dynamic keys in JavaScript
• This is made possible by enclosing the expression inside square brackets.

const key = 'title';
const value = 'JavaScript';

const course = {
	[key]: value,
	price: '$99'
};

• In the above code [key] will evaluate the expression to title

• The attribute is a boolean attribute it presence turns off automatic form validation. In it's absence the browser will continue with automatic form validation

Continued development

• Client-side form validation using only JavaScript - MDN

• Conventional Commits

Useful resources

• Setting linear gradient on border - This helped me to set up a linear-gradient on a border.

• Client-side form validation - This is an amazing article which helped understand the different types of client-side form validation. I'd recommend it to anyone still learning this concept.

• How to create an object with dynamic keys in JavaScript - This allows one to have expressions as the keys of JavaScript object

Author

• Website - Silvanos Eric
• Frontend Mentor - @codexshell