7 Underrated JavaScript Tricks That Will Make You a Better Developer

[Lomanu4]

? Introduction


JavaScript is packed with powerful features—but many developers stick to the basics and miss out on time-saving gems. In this post, I’ll show you 7 underrated tricks that can simplify your code, enhance readability, and make you look like a JavaScript pro in 2025.

Optional Chaining ?.


const username = user?.profile?.name || 'Anonymous';

Avoids errors when deeply nested properties are undefined. Cleaner and safer than long logical chains.

Nullish Coalescing ??


const count = inputValue ?? 0;

Returns default only if the left-hand value is null or undefined (unlike ||, which includes 0 or '').

Object Destructuring with Rename


const { title: blogTitle } = post;

Grab and rename properties in one line.

Convert Anything to Boolean


const isAvailable = !!value;

Quickly turn any truthy/falsy value into a clean true or false.

Shorthand Property Assignment


const user = { name, age }; // same as { name: name, age: age }

Reduces repetition when property and variable names match.

Dynamic Object Keys


const key = 'theme';
const settings = { [key]: 'dark' };

Build flexible objects based on runtime values.

Ternary + Template Combo


const status = `You are ${loggedIn ? 'logged in' : 'logged out'}.`;

Great for short conditional strings and UI feedback.

? Wrap-Up


These tricks may be small, but they add up to cleaner, more elegant JavaScript code. Whether you're working on a side project, fixing bugs, or building production apps—mastering these patterns will level up your skills.

Try using at least 2 of these in your next app!
? Got a trick of your own? Share it in the comments!

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