Frontend Mentor - Intro component with sign up form solution

This is a solution to the Intro component with sign up 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
  • Useful resources

Overview

The challenge

Users should be able to:

• View the optimal layout for the site depending on their device's screen size
• See hover states for all interactive elements on the page
• Receive an error message when the form is submitted if:
  • Any input field is empty. The message for this error should say "[Field Name] cannot be empty"
  • The email address is not formatted correctly (i.e. a correct email address should have this structure: name@host.tld). The message for this error should say "Looks like this is not an email"

Screenshot

Links

• Live Site URL: GitHub-Pages - Intro component with sign up form

Built with

• Semantic HTML5 markup
• CSS custom properties
• Flexbox for layout
• JavaScript for form validation and dynamic styling
• Responsive design with mobile-first approach

What I learned

This project helped reinforce my understanding of responsive design and form validation with JavaScript. Here are a few key takeaways:

Regex for Email Validation: I used a regular expression to validate the email format, ensuring it adheres to a typical structure (name@host.tld).

const emailRegex = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;

Dynamic Error Messages: Error icons and messages were dynamically displayed based on field validation. Each input has associated error states managed through JavaScript functions.

const setError = (index) => {
  formIconError[index].classList.remove("input-icon--hidden");
  formIconError[index].classList.add("input-icon--visible");
  formMessageError[index].classList.remove("span-hidden");
  formMessageError[index].classList.add("span-visible");
};

Focus Management: After form submission, I used .focus() to ensure the user is directed to the first invalid field, enhancing the user experience.

Useful resources

• Regular expressions - Helped me refine the email validation.
• CSS Flexbox Layout Guide This guide clarified Flexbox properties and helped with layout adjustments.