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How to Handle Errors in JavaScript ?

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.



Reffered: https://www.geeksforgeeks.org


JavaScript

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