15 Practical JavaScript Tricks to Write Cleaner, More Maintainable Code

A developer experienced with Next.js and React has compiled 15 JavaScript techniques aimed at improving code quality and reducing complexity. The tips cover modern language features such as optional chaining, nullish coalescing, destructuring, and array methods like flat() and at(). Performance improvements are also addressed, with Promise.all() highlighted as a way to run multiple async requests simultaneously rather than sequentially. Additional recommendations include using crypto.randomUUID() for temporary IDs, preferring const over var, and integrating tools like Prettier and ESLint into every project. The author notes that while each trick may appear minor in isolation, adopting them collectively leads to cleaner and less error-prone applications.