JavaScript Tutorial
JavaScript Exception Handling: All Types With Examples
Table of Contents
- Introduction
- What is Exception Handling in JavaScript?
- Key Elements of JavaScript Exception Handling
- Syntax of Exception Handling in JavaScript
- Types of Exceptions in JavaScript
- Error Object
- Why Use Exception Handling in JavaScript?
- Exception Handling Statements
- Examples of JavaScript Exception Handling
- Best Practices for JavaScript Exception Handling
- Common Scenarios for Exception Handling
FAQs about JavaScript Exception Handling
throw is used to manually trigger an exception, while catch is used to handle the exception and respond accordingly.
No, syntax errors occur during parsing and cannot be caught by try...catch in JavaScript. These errors must be fixed before the script runs.
The finally block is designed to execute cleanup or finalization code regardless of whether an exception occurred in the try block.
Yes, try...catch blocks can be nested to provide more granular error handling for different sections of your code.
If there is no catch block and an error is thrown, the program will terminate, and an error message will be logged to the console.
Yes, throw can be used to create custom exceptions by throwing a new Error object with a custom message.
For asynchronous code, using async/await with try...catch is common, or handling promises with .then and .catch can be an alternative.
No, try...catch should not be used for control flow. It is better suited for handling unexpected errors rather than replacing logical conditions.
