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Solution
Submitted 10 months ago

Responsive Age-Calculator-App

Dev Nerd•530
@roobiwebdev
A solution to the Age calculator app challenge
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Solution retrospective


What are you most proud of, and what would you do differently next time?

Day 36 of #100DaysChallenge

Good morning, folks! ☀️ Today’s project is an amazing one.

Project Name: Age Calculator App

This app allows users to input their birth date and instantly calculates their age in years, months, and days. It’s clean, simple, and effective. Additionally, it features error states to handle invalid inputs gracefully and animations when displaying age calculations.

Technologies Used #HTML

#CSS

#JavaScript

HTML Structure The HTML file sets up the basic structure with inputs for day, month, and year. Semantic elements like , , and are used for form handling.

CSS Styling

Font Import: Used Google Fonts to import the "Poppins" font for a stylish and modern look.

Global Styles: Resets default padding and margin, sets box-sizing, and specifies the font-family for consistency.

Layout: Utilizes Flexbox to center the container and align items. The design includes a clean background, dimensions, padding, border-radius, and box-shadow for an appealing look.

Responsive Design: Media queries ensure the layout adapts beautifully to different screen sizes.

JavaScript Functionality

Input Validation: Adds event listeners to validate day, month, and year inputs.

Error Handling: Displays error messages if inputs are invalid.

Age Calculation: Calculates and displays the user's age in years, months, and days.

Adjusts for cases where days or months are negative:

if(ageDays < 0){ ageMonths--; ageDays += 30; } if(ageMonths < 0){ ageYears--; ageMonths += 12; }

Animation: Animates the values when they are displayed, making the user experience more engaging: animateValue = (obj, start, end, duration) => { let startTimestamp = null; const step = (timestamp) => { if (!startTimestamp) startTimestamp = timestamp; const progress = Math.min((timestamp - startTimestamp) / duration, 1); obj.textContent = Math.floor(progress * (end - start) + start); if (progress < 1) { window.requestAnimationFrame(step); } }; window.requestAnimationFrame(step); };

GitHub Repository:-

Live Demo:-

-Enjoyed every moment coding this!😎

-Completed 35 out of 100 Challenges so far—keeping up the momentum!🔥

-👨‍💻Join me on my coding journey as I tackle advanced challenges and add innovative touches to every project.

-Feedback is always welcome—would love to hear what you think—drop your thoughts, guys!

Let’s grow together! 🌱

Code
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How does the accessibility report work?

When a solution is submitted, we use axe-core to run an automated audit of your code.

This picks out common accessibility issues like not using semantic HTML and not having proper heading hierarchies, among others.

This automated audit is fairly surface level, so we encourage to you review the project and code in more detail with accessibility best practices in mind.

How does the CSS report work?

When a solution is submitted, we use stylelint to run an automated check on the CSS code.

We've added some of our own linting rules based on recommended best practices. These rules are prefixed with frontend-mentor/ which you'll see at the top of each issue in the report.

The report will audit all CSS, SCSS and Less files in your repository.

How does the HTML validation report work?

When a solution is submitted, we use html-validate to run an automated check on the HTML code.

The report picks out common HTML issues such as not using headings within section elements and incorrect nesting of elements, among others.

Note that the report can pick up “invalid” attributes, which some frameworks automatically add to the HTML. These attributes are crucial for how the frameworks function, although they’re technically not valid HTML. As such, some projects can show up with many HTML validation errors, which are benign and are a necessary part of the framework.

How does the JavaScript validation report work?

When a solution is submitted, we use eslint to run an automated check on the JavaScript code.

The report picks out common JavaScript issues such as not using semicolons and using var instead of let or const, among others.

The report will audit all JS and JSX files in your repository. We currently do not support Typescript or other frontend frameworks.