hands-on lab

JavaScript Primitive Data Type Variables and Console Log

Up to 40m
Get guided in a real environmentPractice with a step-by-step scenario in a real, provisioned environment.
Learn and validateUse validations to check your solutions every step of the way.
See resultsTrack your knowledge and monitor your progress.


In programming, variables are named containers for the purpose of storing data. This value may or may not change depending on the type of variable and the conditions set forth by the program's instructions (code).

console.log() is a function that prints a message to the JavaScript console. The message printed is dependent on what is pass through as an argument inside of the parentheses.

In this lab, you are to declare variables of different primitive types. Then output each variable's value in the console.

Learning Objectives

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

  • Declare variables of different primitive data types
  • Use console.log() to output the variable's value to the console

Intended Audience

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


The following 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
Declare a string variable
Display string in the console
Declare a boolean variable
Display boolean in the console
Declare a number variable
Display number in console