JavaScript Cheatsheet
NewModern JavaScript ES6+ syntax reference — destructuring, async/await, arrays, classes, and more.
Frequently Asked Questions
Is this cheatsheet focused on modern JavaScript or older ES5-style patterns?
It leans modern. The built-in entries include optional chaining, nullish coalescing, structuredClone, Array.at, Promise.all, and async/await rather than older callback-only or var-heavy patterns.
Can I copy the short syntax and the fuller example separately?
Yes. Each card has separate buttons for Copy syntax and Copy example, and the page-wide toggle lets you switch the syntax box between the short and full forms.
Does it cover async patterns or only syntax basics?
It covers both. There are dedicated async entries for Promise construction, Promise.all, async functions, try/catch with await, for await...of, and Promise.finally.
Why might some snippets not work in an older browser or runtime?
Because several examples use newer platform features. structuredClone, Array.at, optional chaining, and some async patterns depend on a reasonably modern JavaScript environment.
Can I search by API name or by the text inside examples?
Yes. Search is not limited to titles; it checks the category, title, short syntax, full syntax, description, and example text for each entry.