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JS Fundamentals: Objects, Arrays, and Functions

Introduction

Content

Bonus: Merge Sort

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Functions

Exercise: Implement forEach

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Prompt

Implement forEach that iterates over a collection & for each element of the collection it applies a callback function on it.

NOTE: forEach doesn't have a return value, but rather simply runs the

callback function over each item in the input collection. The callback should

be called with the item, index|key and collection..

Definition: forEach(collection, callback)

Example Usage:

const weapons = ['Revolver','Knife','Lead Pipe','Candlestick'];

forEach(weapons, weapon => {

console.log(weapon);

});

// => "Revolver"

// => "Knife"

// => "Lead Pipe"

// => "Candlestick"

Code here

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Solution

The solution is in the solution branch, which can be checked out in the

Repl.it⁠

by selecting the version control tab on the right and then selecting the solution branch from the drop down menu.

If you are having trouble with

repl.it,⁠

the solutions are also available below.

forEach Solution

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Next 👉
`Scope`⁠

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Exercise: Implement forEach

Prompt

Code here

Solution

forEach Solution

Next 👉 Scope⁠

Next 👉
`Scope`⁠