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Flow Control

Make your programs smart with decisions and loops. Master if/else, switch, for loops, and the ternary operator.

Learn how JavaScript compares values and produces true or false verdicts — the foundation of every decision your code will ever make.

Teach your code to choose different paths based on conditions — the most fundamental building block of program logic.

Combine multiple conditions with AND, OR, and NOT to build complex decision-making logic.

Use switch for cleaner code when comparing one value against many possible matches.

Automate repetitive tasks by telling JavaScript to repeat code a specific number of times.

Learn while loops for when you don't know how many times to repeat, plus break and continue for fine-grained loop control.

Write compact one-line conditionals for simple either/or decisions — a concise alternative to if...else.

Learn how to gracefully handle errors so your program recovers instead of crashing.

Combine everything you've learned — arrays, objects, loops, conditionals, and comparisons — to build an interactive quiz game.

Build a real number guessing game in your browser using HTML, CSS, and JavaScript — no frameworks, no build tools.