Tutorial / Module 1

JavaScript Foundations

Variables, types, operators, conditionals, loops — the building blocks every JavaScript developer needs.

1.1 What is JavaScript and Where it Runs: A 2026 Developer’s Guide Read 1.2 JavaScript Variables: let, const, and var — The Practical Differences in 2026 Read 1.3 JavaScript Data Types Explained: All 8 Types and the `typeof` Quirks Read 1.4 JavaScript Operators Explained: Arithmetic, Comparison, Logical, and the Modern Ones Read 1.5 JavaScript Conditional Statements: if, else, ternary, switch — and the Modern Alternatives Read 1.6 JavaScript Loops Explained: for, while, for-of, for-in — When to Use Which Read 1.7 JavaScript Basic Functions: Declarations, Calls, Return Values, and Arguments Read

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