How to Switch Colors with a Button Click in Your Web App

Learn how to create a toggle button that switches between colors seamlessly in your web app using JavaScript and CSS. This guide explains everything you need to know to achieve a stylish dark mode with ease.
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This video is based on the question https://stackoverflow.com/q/72088402/ asked by the user 'Eugenio' ( https://stackoverflow.com/u/5801865/ ) and on the answer https://stackoverflow.com/a/72088553/ provided by the user 'Eric Phillips' ( https://stackoverflow.com/u/5569485/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Switch Colors with a Button Click in Your Web App

Creating a feature that allows users to switch between different color themes can elevate the user experience of your web app significantly. In this guide, we’ll explore how to toggle background colors and text colors seamlessly using a button click.

The Problem

You have organized classes representing different color codes for both text and background but are struggling with toggling between colors correctly. Specifically, you want to switch:

bgColor3 with bgColor5

txtColor5 with txtColor3

This means that when the user clicks the button, if the current background color is light, it should switch to dark, and vice versa.

The Proposed Solution

Instead of manually toggling multiple class names, a more efficient method is to use a single class at the root level that switches the entire theme. Let's go through the steps needed to implement this.

Step 1: HTML Structure

Start by setting up your HTML with a button and a div. This div will use the classes for both background and text colors.

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Step 2: CSS Styles

Define your colors in the CSS. This includes specific colors for the light and dark modes.

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Step 3: JavaScript Functionality

Now, we add the JavaScript functionality that will allow toggling of the dark mode class on the body element. This function will listen for a button click and toggle the dark-mode class.

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Final Implementation

Putting it all together, your final code would look like this:

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Conclusion

Implementing a color toggle in your web app can enhance user experience by providing options to suit their preference. Rather than managing multiple classes for every color change, utilizing a single class and toggling it with JavaScript keeps your code clean and efficient.

Now you're all set to make your web applications not only more interactive but also more enjoyable! Happy coding!

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