Welcome to Codeloom
Tutorials, references, and deep dives covering Python, JavaScript, DevOps, AI, and the modern web — written by developers, free forever.
Jump straight into the stack you care about.
New posts published weekly.
A step-by-step setup guide for Python 3 on Windows, macOS, and Linux. Install the interpreter, set up VS Code, and write a working Python program in under ten minutes.
A complete beginner's guide to JavaScript arrays — creation, indexing, the essential mutation methods, iteration, map/filter/reduce, and a first look at spread and destructuring.
A complete beginner's guide to control flow in JavaScript — if/else, switch, for, while, for...of, break and continue, and the loops you should reach for first.
Every JavaScript data type explained — strings, numbers, booleans, null, undefined, symbols, bigints, and objects — with practical examples and how to check types correctly.
A complete beginner's guide to numbers in JavaScript — arithmetic, the Math object, rounding, formatting, NaN, Infinity, and the floating-point quirk every developer must know.
A practical guide to JavaScript objects — creation, access, mutation, iteration, shorthand syntax, destructuring, spread, and how object references actually work.