JavaScript
JavaScript Error HandlingJavaScript Error Handling
JavaScript error handling prevents broken code from crashing the app.
Read Time
5 min readDifficulty
BeginnerLast Updated
Jun 15, 2026Version
v1.0.0Introduction
JavaScript programs stop working completely if they hit an error. Developers use `try/catch` blocks to gracefully handle these errors. Instead of crashing, the code catches the mistake and runs a backup plan.
Example
Example
Key Points
- The `try` block holds code that might fail.
- The `catch` block runs only if an error occurs.
- The `finally` block runs regardless of success or failure.
- The `throw` statement creates custom errors.