What are some examples of error handling in JavaScript?

What are some examples of error handling in JavaScript?

In JavaScript, error handling is typically done using try-catch blocks. For example:

try {
    // Code that may throw an error
    let result = riskyFunction();
} catch (error) {
    console.error('Error occurred:', error);
}

This allows you to catch and handle errors gracefully.

Can you explain how the finally block works?

Certainly! The finally block is used to execute code after the try-catch blocks, regardless of whether an error was thrown or not. Here's an example:

try {
    // Code that may throw an error
} catch (error) {
    // Handle the error
} finally {
    // This code runs no matter what
    console.log('Cleanup actions here.');
}

What about using promises for error handling?

When using promises, you can handle errors with the .catch() method. For example:

fetch('some-url')
    .then(response => response.json())
    .catch(error => console.error('Error fetching data:', error));

Are there any best practices for error handling?

Yes, some best practices include:

1. Always use try-catch for synchronous code.
2. Use .catch() for promises.
3. Log errors for debugging.
4. Provide user-friendly error messages.