[Solved] What will be the output of this code?class MyError extends Error { constructor(msg) { super(msg); this.name = 'MyError'; } } try { throw new MyError('Oops!'); } catch (e) { console.log(e.name + ':... | Node.js

Node.js - Error Handling Patterns

What will be the output of this code?

class MyError extends Error { constructor(msg) { super(msg); this.name = 'MyError'; } } try { throw new MyError('Oops!'); } catch (e) { console.log(e.name + ': ' + e.message); }

Aundefined: Oops!

BError: Oops!

COops!: MyError

DMyError: Oops!

Step-by-Step Solution

Solution:

Step 1: Analyze error throwing
The code throws an instance of MyError with message 'Oops!'.
Step 2: Check catch block output
The catch block logs the error's name and message. The name is set to 'MyError' in constructor, message is 'Oops!'.
Final Answer:
MyError: Oops! -> Option D
Quick Check:
Error name and message output = MyError: Oops! [OK]

Quick Trick: Custom error name property controls error type shown [OK]

Common Mistakes:

Expecting default 'Error' name instead of custom
Swapping message and name in output
Assuming undefined name property

Master "Error Handling Patterns" in Node.js

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Perf

More Node.js Quizzes

What will be the output of this code?

Step 1: Analyze error throwing

Step 2: Check catch block output

Final Answer:

Quick Check:

Want More Practice?