Handling errors in JavaScript is crucial for writing robust and reliable code. There are several mechanisms and best practices for error handling in JavaScript:
- Try…Catch Statement:
- Use the
try...catch statement to catch and handle exceptions. Code inside the try block is executed, and if an exception occurs, it’s caught and handled in the catch block.
- Throw Statement:
- You can throw your own custom errors or exceptions using the
throw statement.
- Finally Block:
- The
finally block is optional and is executed regardless of whether an exception is thrown or not.
- Error Object:
- The
Error object contains information about the error, such as the error message (message property) and the name of the error (name property).
- Global Error Handling:
- You can set up a global error handler using the
window.onerror event to catch unhandled exceptions globally.
- Promises:
- When working with asynchronous code using promises, you can use the
.catch() method to handle errors.
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