Javascript terms

2 terms of 1444 total

⚡ From DOM manipulation to async superpowers

JavaScript has evolved from a scripting curiosity into a full-stack language powering browsers, servers, and everything in between. This category covers the language core — closures, prototypes, async patterns, the event loop, modern ES2024+ features — as well as runtime behaviour that trips up developers at every experience level. Understanding JavaScript deeply means fewer bugs and more confident code.

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NaN — Detection & Avoiding Pitfalls ES2015

NaN is the only JavaScript value not equal to itself — use Number.isNaN() (not isNaN()) to detect it, as isNaN() coerces its argument first.

2mo ago javascript beginner

Nullish Coalescing (??) & Logical Assignment ES2020

?? returns the right side only when the left is null or undefined — unlike ||, it does not trigger on 0 or empty string. Parallel to PHP's null coalescing operator.

2mo ago javascript beginner