Implement filter
Implement filter
A filter helper asks the callback whether each item should stay. The returned array contains original items whose callback result was truthy.
That means the helper should not push the callback result itself. It should use the callback result as a decision, then preserve the item when the answer passes.
Your task: Complete customFilter so it returns a new array containing the items whose predicate passes. Pass item, index, and original array to the predicate. Do not use the built-in .filter() method inside your implementation.
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Implement filter
A filter helper asks the callback whether each item should stay. The returned array contains original items whose callback result was truthy.
That means the helper should not push the callback result itself. It should use the callback result as a decision, then preserve the item when the answer passes.
Your task: Complete customFilter so it returns a new array containing the items whose predicate passes. Pass item, index, and original array to the predicate. Do not use the built-in .filter() method inside your implementation.