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Alvin Lucillo

Coalescing operator in JS/TS

/ 1 min read

💻 Tech

In a JS/TS, you can resolve an undefined value into a default value with the coalescing operator ??. This is useful if you want a short-circuit evaluation to return a default value when the value is null or undefined.

const value = undefined;
const result = value ?? "default";
console.log(result); // default