Context with Apply

Beginner

Context with Apply

In this exercise, you're tasked with completing the implementation of the sum()
function.

The function should accept no arguments and use the apply()
method to add the values of the this
array and return the result.

The numbers
array should be passed as the this
object when calling the apply()
method on the sum()
function.

Console

Submit

Solution

00:00

Solution Walkthrough for Context with Apply

Spoiler Alert!

Don't read this unless you've already solved the problem.

By using apply()
, we can pass an array as the context for the function execution. In this case, we pass the numbers
array as the first argument to apply()
, which sets this
inside the sum
function to the numbers
array.

In the sum
function, we access the first and second element of the this
array using [0]
and [1]
respectively, and return their sum.

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