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WebDevSimplified/Vanilla-JavaScript-Calculator
Pure vanilla JavaScript calculator using modern ES6 syntax and classes
A three-file vanilla JS calculator built for WebDevSimplified's YouTube tutorial series, showing basic-to-advanced arithmetic operator chaining without any framework. It's for beginners learning DOM manipulation and ES6 classes, not for anyone looking for a calculator component to drop into a real project.
Genuinely minimal — one HTML file, one CSS file, one script, so you can read the entire codebase in a few minutes. Uses a single ES6 class to hold calculator state (previousOperand, currentOperand, operation) which is a clean, understandable pattern for teaching state management without a framework. No build step or dependencies, so it runs by just opening index.html.
No tests at all, and given it's tutorial code that's somewhat expected but still means zero regression protection if you fork it. Last pushed in 2024 with no real maintenance since — this is a finished tutorial artifact, not an actively developed project. No keyboard input support, only click handlers on the on-screen buttons, which is a real usability gap for a calculator. The 534 stars and 556 forks reflect tutorial popularity, not code quality or reuse — don't mistake this for a battle-tested library.