Crafting RGB Sliders with Vanilla JavaScript and HTML Canvas
If you're looking to create a simple, yet interactive, RGB color picker without relying on any JavaScript frameworks or external libraries, you're in the right place. In this post, I'll walk you through a JavaScript snippet that achieves this by using HTML Canvas. This snippet demonstrates various fundamental concepts like element creation, event listening, and basic canvas methods. The best part? It's all vanilla JavaScript!
The HTML
The HTML structure is simple and to the point. There's a div that will serve as the parent element for our canvas elements.The CSS
We've set up a minimalistic grid layout for our canvases. The grid-gap and rows and columns have been configured for better display. Most notably, we set the cursor to "col-resize" for all elements except the last child to indicate that these can be dragged.The JavaScript
The JavaScript is where the magic happens. We first initialize the RGB values and create an array of canvas elements. We also define several event listeners to make these canvases interactive. We encapsulate the updating logic in a function that we then call whenever there is interaction on the sliders.Conclusion
This code snippet is a clear example of what you can accomplish with vanilla JavaScript and a good understanding of the HTML Canvas API. It's an effective way to get hands-on experience with event handling, DOM manipulation, and graphics rendering. Give it a try, and have fun experimenting!