Typing Speed Test

I'll help you create a comprehensive typing speed test! This will be a single-page application with HTML structure for the text display and input area, CSS for a modern, clean interface with error highlighting, and JavaScript to calculate WPM (words per minute) using the formula (characters/5)/minutes and accuracy as (correct keystrokes/total keystrokes)*100. I'll implement difficulty levels (easy, medium, hard) with progressively complex text passages, a LocalStorage-based history system with Chart.js for performance visualization, and a virtual keyboard using CSS Grid that highlights keys as you type.

This is an ambitious project that combines several complex features. I can provide you with a foundational implementation, though some features like real leaderboards would require backend infrastructure. The core typing test with WPM calculation, accuracy tracking, and error highlighting is straightforward to implement in vanilla JavaScript, but I'd recommend breaking this into phases—starting with the basic test functionality, then adding history tracking, and finally layering in advanced features like competition mode. Would you like me to start with a working prototype of the essential features, or do you need guidance on a specific component?

I can provide code for a typing speed test with these features. The core functionality uses event listeners to capture keystrokes, calculates WPM as (characters typed / 5) / (time in minutes), and tracks accuracy by comparing input against source text character-by-character. For the virtual keyboard, I'll use a CSS Grid layout with data attributes mapping to keycodes. The competition mode with leaderboards would typically require a backend service like Firebase for data persistence and real-time updates across users.