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Implement Array.prototype.filter

By FrontendAtlas Team · Updated Jan 30, 2026

Recreate the native Array.prototype.filter() method as myFilter. It should call a provided callback once for each existing element in the array, include the element in the new array if the callback returns a truthy value, skip holes in sparse arrays, and support an optional thisArg…

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Implement Array.prototype.filter: Recreate the native Array.prototype.filter() method as myFilter. It should call a provided callback once for each existing element in the array, include the element…. Expect arrays and callbacks decisions under intermediate level constraints.

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