Exercise Monday

Goal: In the Looping lesson, we learned:

  • How to use an Array.prototype.forEach() loop.
  • Naming conventions for arrays and the parameter in a loop.

As we can see, looping is an incredibly important programming concept. Now it's time to practice. We'll begin with two looping exercises in the console and then move on to creating a small project.

Warm Up

  • If we used Array.prototype.forEach() to loop through an array called "kittens", what should we call the parameter in the Array.prototype.forEach() function? Why?
  • What does the += operator do?


Complete both of the exercises listed below.

Looping Practice in the DevTools Console

  • Make an array of your friends' names. Loop through it and console.log() a greeting to each friend in the array.
  • Write a loop to multiply an arbitrary amount of numbers. This should look similar to the code to sum numbers from the "forEach Looping" lesson.

Favorite Ice Cream Flavors

  • Make a web page that lists out your favorite ice cream flavors. Rather than writing the flavors in the HTML, use a JavaScript loop to insert the flavors into the page from an array. Use the document.createElement() and Element.append() or Element.prepend() methods to create and add elements to your webpage.

Lesson 19 of 50
Last updated more than 3 months ago.