Loopy Math

Welcome!

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Note: If you are coding along with the video, we suggest you open the video in a window on the left and your code in a window on the right. This method of coding along is called "split screen".

Contents

1. Intro
2. The Lab
3. Getting Started

Intro

Javascript can be used to make mathematical tasks much less... well... mathy. In this lab, you will use for loops to compute some math challenges without having to add hundreds of numbers by hand.

The Lab

Loops in javascript allow us to automate processes that would be tedious and exhausting otherwise.

For example: Without loops, printing 100 different numbers would take 100 lines of code. With loops, we can do it in 3 lines of code. More impressively, we can bump that number up to 10,000, or even into the millions and billions without having to add extra lines of code!

Open up the loops.js file, and try to complete each of the for loop challenges described there (written as javascript comments). Run the code after each new loop you write to see if your code works as intended. Before moving on to the next challenge, make sure to comment out all previous code. Many of the challenges can be done in at least two ways, and some can be done in ad many as 10 ways! As long as your output meets the criteria for each challenge, you're doing a great job!

Need a challenge? There are stretch activities built right into this lab!

Getting Started

Not sure where to start? Take a look at the example below...

Example: Code a for loop that prints every number from 0 to 2.

for(let i = 0; i <= 2; i++) {
  console.log(i)
}