Error Handling In JavaScript

When writing JavaScript code, it is important to handle errors effectively to ensure that your code runs smoothly and does not crash. One of the ways to handle errors in JavaScript is by using the try and catch statement.

Try & Catch Statement

The try statement allows you to define a block of code to be tested for errors, while the catch statement allows you to define a block of code to be executed if an error occurs in the try block.

Here is an example of how you can use the try and catch statement in JavaScript:

“`html

try {
// code that may throw an error
console.log(variableThatDoesNotExist);
} catch (error) {
// code to handle the error
console.log(“An error occurred: ” + error.message);
}

“`

In this example, we are trying to access a variable that does not exist, which will throw an error. The catch block will then handle the error by logging a message to the console.

Using the try and catch statement in your JavaScript code can help you identify and handle errors in a more controlled manner, preventing your code from crashing unexpectedly.

Remember to always test your code thoroughly to ensure that it handles errors effectively and runs smoothly.