hands-on lab

Working With JavaScript For Loops

Up to 45m
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In this lab, you will be working with JavaScript For loops. A for loop is a way to loop over an iterable in JavaScript. A loop is used to execute a specific block of code a specific number of times.  JavaScript has loops that are designed to work on iterable and non-iterable data types. 

Learning Objectives

Upon completion of this lab, you will be able to:

  • Create a for loop
  • Create a for...of loop for arrays
  • Create a for...in loop for objects
  • Understand how different loops work in different scenarios

Intended Audience

  • Software Engineers who need to learn front-end technologies to expand their skillset
  • Beginners learning front-end development


The following courses/courses and labs can ensure your success:

About the author

Farish Kashefinejad, opens in a new tab
Full-Stack Development Content Creator
Learning paths

Farish has worked in the EdTech industry for over six years. He is passionate about teaching valuable coding skills to help individuals and enterprises succeed.

Previously, Farish worked at 2U Inc in two concurrent roles. Farish worked as an adjunct instructor for 2U’s full-stack boot camps at UCLA and UCR. Farish also worked as a curriculum engineer for multiple full-stack boot camp programs. As a curriculum engineer, Farish’s role was to create activities, projects, and lesson plans taught in the boot camps used by over 50 University partners. Along with these duties, Farish also created nearly 80 videos for the full-stack blended online program.

Before 2U, Farish worked at Codecademy for over four years, both as a content creator and part of the curriculum experience team.

Farish is an avid powerlifter, sushi lover, and occasional Funko collector.

Covered topics

Lab steps

Introduction to JavaScript Labs
Using a For Loop to Loop Through an Array
Using a For...Of Loop to Loop Through an Array
Using a For...In Loop to Loop Through an Object