Object Destructuring with Aliasing and Defaults

Snippet

Destructuring allows extracting object properties into variables with custom names (aliasing) and default values if the property is missing.

snippet.js
javascript
const config = { id: 101 };
const { id: userId, theme = 'dark' } = config;
console.log(userId, theme);

Breakdown

id: userId

Extracts the 'id' property and renames it to 'userId'.

theme = 'dark'

Assigns 'dark' if the 'theme' property does not exist in config.

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