[Solved] Find the problem in this asynchronous error handling code:const fs = require('fs'); function readFile() { fs.readFile('file.txt', (err, data) => { if (err) throw err; console.log(data); });... | Node.js

Node.js - Error Handling Patterns

Find the problem in this asynchronous error handling code:

const fs = require('fs');
function readFile() {
  fs.readFile('file.txt', (err, data) => {
    if (err) throw err;
    console.log(data);
  });
}
readFile();

Afs.readFile is synchronous

BMissing callback function

CIncorrect file path syntax

DThrowing error inside callback without try-catch

Step-by-Step Solution

Solution:

Step 1: Understand error throwing in async callbacks
Throwing inside callback without try-catch crashes app.
Step 2: Identify missing error handling
Proper error handling should handle errors without throwing inside callback.
Final Answer:
Throwing error inside callback without try-catch -> Option D
Quick Check:
Throw in async callback needs try-catch [OK]

Quick Trick: Avoid throw inside async callbacks; handle errors gracefully [OK]

Common Mistakes:

Throwing error inside callback
Assuming fs.readFile is sync
Ignoring callback parameters

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More Node.js Quizzes

Find the problem in this asynchronous error handling code:

Step 1: Understand error throwing in async callbacks

Step 2: Identify missing error handling

Final Answer:

Quick Check:

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