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Free, step-by-step courses in programming, AI and more. Short lessons you can run and try yourself, with your progress saved as you go.
JavaScript Basics: Make Web Pages Come Alive
A free beginner course in JavaScript, the language that makes web pages interactive. Eight short lessons with runnable examples and a small project. Track your progress lesson by lesson.
JavaScript Functions and Methods: A Topic-by-Topic Reference
Every JavaScript function and method you will really use, one topic per lesson: numbers, strings, arrays, objects, Set, Map, dates, JSON, promises and regular expressions, each with a runnable example and its real output.
JavaScript: 20 Interview Programs with Solutions
Twenty classic JavaScript interview problems in four short lessons. Each has the question, examples, the approach, a tested solution with edge cases, its time and space complexity, and a likely follow-up question.
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