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JavaScript Fundamentals for QA & Automation Testers
Rating: 4.8 out of 5(50 ratings)
914 students

JavaScript Fundamentals for QA & Automation Testers

Learn core JavaScript concepts every tester needs for automation tools like Playwright, Cypress & Selenium
Created byLucky Trainings
Last updated 4/2026
English

What you'll learn

  • Understand JavaScript fundamentals from scratch
  • Use variables, data types, and operators
  • Write and use functions
  • Understand conditional statements and loops
  • Work with arrays and objects
  • Understand JavaScript basics required for test automation
  • Read and modify JavaScript code used in automation scripts

Course content

2 sections70 lectures8h 44m total length
  • Introduction to Javascript2:13

    Explore how JavaScript powers website development and UI and mobile automation with Playwright and detox, and learn variables, print statements, conditionals, loops, and exception handling.

  • Javascript Configuration on MAC10:31

    Configure Mac for JavaScript development by installing Visual Studio Code and Node.js with npm, then set up the editor and optionally use GitHub Copilot for coding.

  • Javascript Configuration on Windows5:40

    Configure Node.js and Visual Studio Code on Windows by installing the Node.js MSI and VS Code, then open a js basics folder in VS Code to start JavaScript.

  • Configuring GITHUB Copilot to VSCode4:41

    Install and sign in to the GitHub Copilot extension in Visual Studio Code to use the AI pair programmer for writing code and solving script issues.

  • Overview on Console.log() & Hello World Program10:32

    Write a basic JavaScript program that prints messages to the console with console.log, using Hello world, and run it via terminal with node or with the code runner.

  • Overview on Variables, Comments with examples11:35

    Define variables in JavaScript and understand memory locations used to store values. Compare var and let scope, and use comments and meaningful names to document code and manage values.

  • Overview on Variables, Comments with examples Part 21:55

    Print and observe variables by using console.log after declarations, print the emp id for visibility, and verify the output in the console, noting copilot suggestions.

  • Overview on Constants with examples3:05

    Learn how constants differ from variables in JavaScript with an example where a constant's value cannot be changed, such as an employee location Hyderabad, and where reassignment triggers an error.

  • Overview on Datatypes with examples10:52

    Explore primitive and reference data types in JavaScript, including strings, numbers, booleans, null, undefined, NaN, and Infinity. Use console.log examples and type checks to reinforce concepts.

  • String methods with example16:20
  • Overview on Operators with examples15:21

    Explore arithmetic, assignment, comparison, and logical operators in JavaScript with practical examples like addition, subtraction, increment, division, modulus, and boolean checks.

  • Overview on Operators with examples Part 25:34

    Explore logical operators in JavaScript, including and, or, and not, with truth tables and examples using console.log, string concatenation, and real-world conditionals.

  • Conditional Statements with examples9:39

    Explore JavaScript conditional statements with if, else, and else if, using practical examples to decide code execution based on true or false conditions.

  • for loop with example9:48

    Explore how for loops work in JavaScript, including initialization, condition, and increment, with examples that print Surendra and generate even numbers from 1 to 100, plus nested loops.

  • while & do-while loop with example9:36

    Learn how while and do-while loops manage repeated execution in JavaScript with conditions and counter increments. Compare them to for loops and address infinite loops.

  • Break & Continue statement with examples6:13
  • overview on Switch case with example5:58
  • Overview on Functions Part 16:46

    Master how functions create reusable blocks of code to perform specific tasks, using the function syntax, braces, and arguments, and learn to call with parameters.

  • Overview on Functions Part 25:40

    Demonstrates how to create JavaScript functions to perform operations like sum and subtraction, showing how return produces outputs used with console.log and contrasts built-in versus user-defined functions.

  • Anonymous & Arrow functions with examples7:58

    Explore anonymous and arrow functions in JavaScript, compare them with traditional functions, store them in variables, and call them with or without parameters in practical examples.

  • Overview on Objects with example7:49

    Explore JavaScript objects as key value structures for QA automation, access properties with dot or bracket notation, and modify, delete, or attach functions like greet in employee and student examples.

  • Overview on Arrays with example9:30

    Explore how arrays store multiple values as a reference data type, access elements by index, check length, and modify arrays using push, unshift, pop, shift, and splice.

  • forEach with examples9:30

    Explore arrays as a reference data type and learn to define and access multiple values by index. Use push, unshift, splice, pop, and shift, plus for loop and forEach iteration.

  • Overview on Class & methods Part 17:06

    Discover how a class acts as a blueprint for objects in JavaScript, defining methods and creating objects with new to run greeting messages, as shown with a student details example.

  • Overview on Class & methods Part 25:07

    Learn how to add a constructor to a class in JavaScript, including default and parameterized constructors and methods, and observe how the new keyword triggers constructor execution during object creation.

  • Overview on Inheritance6:42

    Explore how inheritance links parent and child classes in JavaScript using extends, as a dog extends an animal and accesses both parent and child methods.

  • Overview on this & super keywords. Example on this keyword7:18

    Explore how the this keyword references the current class instance. Learn how the super keyword accesses the parent class, including constructors, properties, methods, and static members, with practical examples.

  • Example on super keyword4:12
  • Overview on Constructor10:27
  • Overview on Constructor Function6:22

    Learn how to define a capitalized constructor function to create object instances with this.name and this.age, using the new operator, and pass parameters to initialize multiple objects.

  • overview on ES62:06

    Explore the es6 features, including let and const, default parameters, arrow functions, classes, import/export, promises, and rest parameters, and see how they apply to automation testing.

  • Overview on Modules8:22

    Learn how to create and use modules in JavaScript by exporting and importing code, organizing functions like greeting message and login user for reusable, maintainable automation test tooling.

  • Knowledge Check

Requirements

  • No programming experience required
  • Basic understanding of software testing concepts
  • A laptop or desktop with internet access
  • Willingness to learn

Description

Are you a software tester who wants to learn JavaScript but doesn’t know where to start?
This free JavaScript basics course is designed specifically for testers and QA engineers who want to build a strong foundation before moving into modern automation tools.

JavaScript is a must-have skill for testers in 2025 and beyond, especially if you plan to work with tools like Playwright, Cypress, WebdriverIO, Selenium JavaScript, or AI-powered testing frameworks.

In this course, you’ll learn JavaScript from a tester’s perspective, focusing on practical concepts rather than theory-heavy programming.

. What makes this course different?

  • Designed only for testers (no unnecessary developer jargon)

  • Simple explanations with real testing examples

  • Beginner-friendly and 100% free

  • Perfect foundation before learning test automation frameworks

By the end of this course, you’ll feel confident reading and writing JavaScript code required for UI automation, API testing, and AI-assisted testing tools.

Topics covered :

  • Introduction to Javascript

  • Javascript Configuration on Windows  MAC

  • Overview on Console.log() & Hello World Program

  • Overview on Variables, Comments, Constants, Datatypes, Operators with examples

  • Conditional, Looping, break, continue, switch Statements, Functions, Anonymous, Arrow , Objects with examples

  • Arrays, forEach, class, object, constructor & methods

JavaScript basics

JavaScript for testers

JavaScript for automation testing

JavaScript for QA

Playwright JavaScript

Cypress JavaScript

Automation testing JavaScript

Free JavaScript course

Beginner JavaScript for testing


Who this course is for:

  • Manual testers who want to move into automation
  • QA engineers starting with JavaScript-based tools
  • Testers preparing for Playwright or Cypress
  • Students and job seekers in software testing
  • Beginners who want JavaScript only for testing
  • Anyone confused about JavaScript but wants a simple start