NodeJS Error Handling Simple Practices 2023

Programming
By XiaoXin
A Bit Randomly

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Main Contents

NodeJS Error Handling Simple Practices

Here is an example of using a try-catch block in Node.js:

try {
  // code that may throw an error
  const result = someFunction();
  console.log(result);
} catch (error) {
  // handle the error
  console.error(error);
}

In this example, the code inside the try block is executed. If an error is thrown, it will be caught by the catch block and the error will be logged to the console.

Here is another example that demonstrates how to throw and catch a custom error:

try {
  if (someCondition) {
    throw new Error('Custom error message');
  }
} catch (error) {
  console.error(error.message);  // Output: "Custom error message"
}

In this example, the throw keyword is used to throw a custom error with a specific message. The error is then caught by the catch block, and the error message is logged to the console.

I hope these examples help to illustrate how try-catch blocks can be used in Node.js. Let me know if you have any other questions.

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