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JavaScript/TypeScript for QA

Modern JavaScript and TypeScript for testers: variables, strings, functions, arrays, objects, async/await, classes, page objects, TypeScript types and generics, and test-writing, with a live code playground in every lesson. A complete, hands-on path from your first test to a production-grade framework.

109
Lessons
13
Sections
13
Practice labs
~41h
Of content
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users.check.js
1const users = [{ name: 'Asha', active: true }, { name: 'Ravi', active: false }];
2
3const active = users.filter((u) => u.active);
4console.assert(active.length === 1, 'expected one active user');
5console.log(`PASS: ${active.map((u) => u.name)} is active`);
1 passedrun · 3ms

The method

Built like real QA work, not a video playlist.

Learn

109 focused lessons, each a few minutes long.

Practice

13 hands-on labs in a browser workspace.

Test yourself

13 section assessments plus a final exam.

Prove it

A public, verifiable achievement for recruiters.

What you will learn

  • Getting Started with JavaScript for QA: Why QA Engineers Need JavaScript and TypeScript, How JavaScript Runs: Browsers, Node.js and Test Runners, Your First Script and the Console
  • Variables, Types and Operators: let, const and Why var Is Avoided, Primitive Types: string, number, boolean, null, undefined and Missing Test Data
  • Strings and Text Validation: String Basics and Template Literals, Searching Text: includes, startsWith, indexOf, Trimming, Casing and Normalising UI Text
  • Control Flow and Logic: if, else and Decision Tables in Code, switch Statements for Environments, Truthy and Falsy Values
  • Functions for Reusable Tests: Declaring Functions and Arrow Functions, Parameters, Defaults and Rest Parameters, Return Values and Pure Helpers
  • Arrays and Collections: Creating and Accessing Arrays, Adding, Removing and Copying Items, map for Transforming Test Data

Where you will be at the end

  • Complete 13 hands-on practice challenges, one per section (from Getting Started with JavaScript for QA to Testing with JavaScript and TypeScript)
  • Pass 13 section assessments
  • Build the portfolio project: Project 1
  • Pass the JavaScript/TypeScript for QA final assessment and add the result to your Skill Passport

Who this course is for

  • Beginners and manual testers starting this skill from scratch
  • Working testers who want to apply it on real projects
  • Anyone preparing for QA interviews that ask about this skill
  • Best if you already have: No coding experience needed; Basic understanding of software testing helps

Curriculum

14 sections, one clear path.

LessonPracticeKnowledge checkProjectAssessment
    • Why QA Engineers Need JavaScript and TypeScript
    • Knowledge check
    • How JavaScript Runs: Browsers, Node.js and Test Runners
    • Knowledge check
    • Your First Script and the Console
    • Knowledge check
    • Reading Error Messages and Stack Traces
    • Knowledge check
    • Comments, Naming and Readable Test Code
    • Knowledge check
    • Using the Practice Playground Effectively
    • Knowledge check
    • Strict Mode and Modern JavaScript (ES2015+)
    • Knowledge check
    • How Test Frameworks Use JavaScript
    • Knowledge check
    • Debugging and Refining a Test Utility Suite
    • Section assessment

Members-only toolkit

Take the course with you

Made from this course's own lessons, quizzes and labs — ready to revise before interviews or use at work.

Course cheat sheet

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Interview Q&A pack

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Lab solutions & hints

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  • Auto-checked labs
  • Capstone portfolio project
  • Timed final exam

Why paid courses

More than a free course: practice, proof and a portfolio

What you getFreeAcademy
Short lessons with examples
Quick checks and certificate
Hands-on labs checked automatically
Section tests and a timed final exam
Portfolio capstone project with milestones
Cheat sheet, interview pack and lab answers to download
Verified skills on your profile and Skill Passport

What Students Are Saying

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JavaScript/TypeScript for QA: common questions

1.Do I need experience before starting JavaScript/TypeScript for QA?
No coding experience needed. Basic understanding of software testing helps.
2.What can I try for free, and what needs payment?
5 preview lessons are open to everyone. Full access to every lesson, lab and assessment is a one-time payment. The current price, and any offer that is still running, is shown in the access panel on this page and confirmed again at checkout.
3.How long does the course take?
About 41 hours of lessons and labs, fully self-paced. Your progress is saved automatically so you can stop and continue any time.
4.What do I get when I finish?
Passing the final assessment gives you a verifiable achievement page you can share, and the result is added to your Skill Passport.

Finish with proof, not just a certificate PDF.

Pass the final assessment and get a public verification page showing your score, completion date and the skills you demonstrated — ready to share on LinkedIn.