Which of the following correctly defines a custom error class InputError that extends the built-in Error class in Node.js?

easy📝 Syntax Q3 of 15

Node.js - Error Handling Patterns

Which of the following correctly defines a custom error class InputError that extends the built-in Error class in Node.js?

Aclass InputError extends Error { constructor(message) { super(message); this.name = 'InputError'; } }

Bclass InputError { constructor(message) { this.message = message; this.name = 'InputError'; } }

Cfunction InputError(message) { this.message = message; this.name = 'InputError'; }

Dclass InputError extends Error { constructor() { this.name = 'InputError'; } }

Step-by-Step Solution

Solution:

Step 1: Extend the built-in Error class
This ensures the custom error inherits standard error properties and behavior.
Step 2: Call super(message) in the constructor
This initializes the message property correctly on the Error object.
Step 3: Set the name property explicitly
Setting this.name helps identify the error type when caught.
Final Answer:
class InputError extends Error { constructor(message) { super(message); this.name = 'InputError'; } } correctly implements all these steps.
Quick Check:
Extends Error + super(message) + name set [OK]

Quick Trick: Always extend Error and call super(message) [OK]

Common Mistakes:

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