Throwing different types of exceptions in JavaScript

Let's throw our own exception and see how the object with an error behaves in this case:

try {
	throw new Error('an exception text');
} catch (error) {
	console.log(error.name); // 'Error'
	console.log(error.message); // 'an exception text'
}

As you can see, our exception type is 'Error'. Any exceptions thrown in this way will have the same type. This, however, will not always be convenient, since if we will have several exceptions, we will not be able to distinguish them from each other.

JavaScript provides a solution to this problem: you can throw exceptions not only of the Error type, but also any built-in in JavaScript type of error, for example, TypeError, SyntaxError, RangeError.

Let's throw an exception like SyntaxError as an example:

try {
	throw new SyntaxError('an exception text');
} catch (error) {
	console.log(error.name); // 'SyntaxError'
	console.log(error.message); // 'an exception text'
}

Throw an exception of the TypeError type.

Throw an exception of the SyntaxError and RangeError types. Catch these exceptions with a single try-block. In a catch-block, output different error messages for different exception types.