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Synchronous vs Asynchronous JavaScript

1d ago · 10 min read · JavaScript can only do one thing at a time. How it handles waiting, that's the whole story. Start With How Code Normally Runs When you write JavaScript, the default behavior is simple: the code runs

Async/Await in JavaScript: Writing Cleaner Asynchronous Code

1d ago · 10 min read · Promises solved callback hell. Async/await made promises look like normal code. The Problem That Needed Solving If you've read about callbacks and promises, you know the story. JavaScript is single-

Error Handling in JavaScript: Try, Catch, Finally

Mar 28 · 12 min read · Errors are inevitable. Whether your program crashes or recovers gracefully is entirely up to how you handle them. What Errors Are in JavaScript A JavaScript error is a signal that something went wro

Spread vs Rest Operators in JavaScript

Mar 28 · 11 min read · Same syntax. Opposite jobs. One expands values outward, the other collects them inward. The Syntax That Does Two Opposite Things JavaScript has a three-dot syntax, ..., that appears in two completel

String Polyfills and Common Interview Methods in JavaScript

Mar 28 · 13 min read · Knowing that String.prototype.trim() exists is table stakes. Understanding how to build it yourself is what separates candidates at interviews. What String Methods Are JavaScript strings come with a