JavaScript Error_handling Guide
Error handling in JavaScript uses try/catch/finally blocks, Promise .catch(), and error event listeners for robust applications. The guide walks through Try/Catch/Finally. `try { risky() } catch(err) { handle(err) } finally { cleanup() }`. Error types: Error, SyntaxError, ReferenceError, TypeError, RangeError, URIError, AggregateError. instanceof check: `if(err instanceof TypeError)`. Throw: `throw new Error("msg")`. Custom: class extends Error. The guide is organized into 1 sections that build on each other, each pairing a prose explanation with runnable code. Related guides: Arrays, Strings, Numbers, Math, Date. This is one of 145 JavaScript guides on JS Reference — see the full list on the guides page. Practice what you learn in the JavaScript playground, and look up any unfamiliar term in the JavaScript glossary.