What are built-in error classes in JavaScript?

What are built-in error classes in JavaScript?

Built-in error classes in JavaScript include Error, TypeError, ReferenceError, SyntaxError, and RangeError. Each serves a specific purpose.

Can you explain the difference between TypeError and ReferenceError?

Sure! A TypeError occurs when a value is not of the expected type, while a ReferenceError happens when a variable is not defined.

When should I use custom error classes?

You should use custom error classes when you need to handle specific error conditions in your application that aren't covered by built-in errors.

How do I create a custom error class?

You can create a custom error class by extending the built-in Error class. Here's a simple example: class MyError extends Error { constructor(message) { super(message); this.name = 'MyError'; }}.