CodeKeysJavaScript typing practice
Type JavaScript faster: arrow functions, strict equality, optional chaining, template literals and });. Start typing below - no sign-up.
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What makes code typing different
General typing trainers drill prose, where letters dominate. In code, symbols and casing carry much of the load. CodeKeys measures every key, symbol cluster and keyword, finds the weakest one, and generates practice that looks like the language while drilling your weak spots.
Symbols, not prose
Practise =>, ===, !==, ?., ?? and ${ - the clusters where code typing stalls.
Adapts to you
Every key and symbol is timed; your weakest one fills the next lesson until it reaches your target speed.
Real JavaScript
Prettier-style drills and real snippets with async/await, array methods, classes and modules.
Private and offline
No account, no cookies, nothing leaves your browser. Install it as an app and practise offline.