Extract Functions Arguments using Destructure in JavaScript

The page explains a simple pattern for handling function inputs in JavaScript: collect the passed values with a rest parameter, then unpack them with array destructuring. It also separates the idea of a parameter from the actual argument value and contrasts both with the built-in arguments object.

Reading notes

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• Use ...args to collect passed values into a real array, then assign them with [egg, cheese] = args
• The arguments object exists in every non-arrow function, but it is array-like rather than an array
• A parameter is the variable in the function declaration, while an argument is the value passed at call time
• The page recommends rest parameters over arguments because they are explicit and return a real array
• AirBnB style guidance says not to name a parameter arguments
• The page shows that defaults can be set directly in the header with ...[egg = '', cheese = '']
• It also shows that rest parameters can be destructured directly as ...[egg, cheese]