Frontend Mentor - Calculator app solution

This is a solution to the Calculator app 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
• Author

Overview

The challenge

Users should be able to:

• See the size of the elements adjust based on their device's screen size
• Perform mathmatical operations like addition, subtraction, multiplication, and division
• Adjust the color theme based on their preference
• Bonus: Have their initial theme preference checked using prefers-color-scheme and have any additional changes saved in the browser

Screenshot

Links

• Solution URL: Frontend mentor solution
• Live Site URL: Live site

My process

Built with

• Semantic HTML5 markup
• CSS custom properties
• Flexbox
• CSS Grid
• Mobile-first workflow
• SASS-SCSS
• Vanilla JS

What I learned

• I learned to use desktop theme preference. And to change theme between 3 themes.
• For get the numbers to calculate I used e.target.id of each buttons.
• When we click on an operator button (+, -, /,*) the number (e.target.id) became a "previousNumber" and be display in "previousdisplay" this number will be calculate with the next numbers until we click on egal for have the total. Every time we click on a operator button we will get preview of the total price in "previousdisplay"

Continued development

Practice more javascript

Author

• Website - Github
• Frontend Mentor - @Stv-devl