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https://github.com/all-my-frontend-mini-projects/age-calculator-app_frontend_project

Welcome to the Age Calculator App, your reliable tool for instant age calculation. With seamless form validation and error handling, users can accurately determine their age. Built with HTML, CSS, and vanilla JavaScript, this project showcases modern web development techniques. Experience responsive design and intuitive user interactions today!😇🚀
https://github.com/all-my-frontend-mini-projects/age-calculator-app_frontend_project

agecalculator animation css desktop-first error-handling html js nextjs nodejs project react responsive responsive-design web webdevelopment

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Welcome to the Age Calculator App, your reliable tool for instant age calculation. With seamless form validation and error handling, users can accurately determine their age. Built with HTML, CSS, and vanilla JavaScript, this project showcases modern web development techniques. Experience responsive design and intuitive user interactions today!😇🚀

Awesome Lists containing this project

README 

        
# Age Calculator App



## Welcome! 👋



## Table of contents



- [Overview](#overview)

  - [The challenge](#the-challenge)

  - [How to setup the project](#how-to-setup-the-project)

  - [Screenshot](#screenshot)

  - [Links](#links)

- [My process](#my-process)

  - [Built with](#built-with)

  - [What I learned](#what-i-learned)

  - [Continued development](#continued-development)

  - [Useful resources](#useful-resources)

- [Author](#author)

- [Acknowledgments](#acknowledgments)



## Overview



### The challenge



Users should be able to:



- View an age in years, months, and days after submitting a valid date through the form

- Receive validation errors if:

  - Any field is empty when the form is submitted

  - The day number is not between 1-31

  - The month number is not between 1-12

  - The date is in the future

  - The date is invalid e.g. 31/04/1991 (there are 30 days in April)

- View the optimal layout for the interface depending on their device's screen size

- See hover and focus states for all interactive elements on the page

- **Bonus**: See the age numbers animate to their final number when the form is submitted



I have ensured to provide an intuitive user experience with responsive design and error handling for accurate age calculation.



### How to setup the project



To set up the project locally, follow these steps:



1. Clone the repository using GitHub Desktop or Git Bash:

   ```bash

   https://github.com/SartHak-0-Sach/Age-calculator-app_frontend_project.git

   ```

2. Open the project folder in your code editor.

3. Run the project using a live server extension or deploy it using Netlify, Vercel, or another web hosting and deployment service.



### Screenshot



![Design preview for the Age Calculator app coding challenge](./design/active-states.jpg)



### Links



- Solution URL: [link to this repo](https://github.com/SartHak-0-Sach/Age-calculator-app_frontend_project)

- Live Site URL: [live site URL](https://age-calculator-app-frontend.netlify.app/)



## My process



### Built with



- Semantic HTML5 markup

- CSS

- Flexbox

- DOM manipulation

- Vanilla JavaScript



You will find all the required assets in the `/design` folder. The assets are already optimized.



### What I learned



This project requires programmer to be well versed with date and time methods of JavaScript along with DOM manipulation to show error as shown below



js = proud of this function



```

function onError(element, message) {

    const inputControl = element.parentElement;

    const errorDisplay = inputControl.querySelector(".feedback");

    const input = inputControl.querySelector(".form-control");

    const label = inputControl.querySelector(".form-label");

    label.classList.add("color-red");

    input.classList.add("border-red");

    errorDisplay.innerHTML = `
${message}
`;

    inputControl.classList.remove("success");

}

```



### Continued development



The continuously learning journey of a programmer never ends. This project made me realize that there are many concepts that I need to work upon including fundamentals like flex-box and its properties, to more complex concepts like working with fetch and async await in javascript. These areas are some that I think I need to work more upon in the upcoming future as they highlight some of the most significant regions of web development that are important for every developer to know of. 



These key points mentioned here will help me grow accountable and consistent towards improving at writing good quality code and be a successful full stack developer one day.



### Useful resources



- [mdn documentation DOM](https://developer.mozilla.org/en-US/docs/Web/API/Document_Object_Model) - This is an amazing article which helped me finally understand promises, async and await syntax. I'd recommend it to anyone still learning this concept.

- [Harkirat Singh course notes](https://github.com/SartHak-0-Sach/harkirat-singh-course_code_and_notes) - I have added notes of all lectures along with code and lecture insights of all weeks along with bonus lectures to help you all as much as I can.

- [My development code and notes](https://github.com/SartHak-0-Sach/cwh-web-dev-playlist_code_and_notes) - These are my notes that I made while working on my development skills in initial days and did these courses. Make sure to star the repository if you like it.✨💫



## Author



Sarthak Sachdev

- Website - [Sarthak Sachdev](https://itsmesarthak.netlify.app/)

- LeetCode - [@sarthak_sachdev](https://leetcode.com/u/sarthak_sachdev/)

- Twitter - [@sarthak_sach69](https://www.twitter.com/sarthak_sach69)



## Acknowledgments



I feel like the solutions provided on the website and the continuous doubt solving by industry experts on discord for free is something that is unmatched by anyone else and need to be acknowledged for their efforts in improving me as a developer by suggesting the best practices in your respective tech stack.



## Got feedback for me?



I love receiving feedback! I am always looking to improve my code and take up new innovative ideas to work upon. So if you have anything you'd like to mention, please email 'hi' at saarsaach30[at]gmail[dot]com.



If you liked this project make sure to spread the word and share it with all your friends.



**Happy calculating!** ☺️🚀