In my last project, I encountered an issue with unhandled promise rejections, which caused the application to crash. I addressed this by implementing a global error handler and using try-catch…
#promises
You can use Promises to manage asynchronous database queries, allowing you to chain then and catch methods for handling data and errors. By returning a Promise from the database function,…
JavaScript Promises are objects that represent the eventual completion or failure of an asynchronous operation. They are commonly used in AI and Machine Learning for handling data-fetching tasks or model…
In a recent project, I had to handle multiple API calls simultaneously. I used Promise.all to manage these asynchronous operations, ensuring all responses were received before processing the results. This…
Async/await is a syntax in JavaScript that allows you to write asynchronous code in a synchronous manner. It works on top of promises, where ‘async’ declares a function and ‘await’…

2,000 Interview Questions & Answers, in one PDF
- Short answers, in-depth explanations, common mistakes and follow-ups
- 89 topics, from Beginner to Architect, with a clickable contents list
- 226 extra questions that are not on this website
- Free Bonus Pack: 30-day study plan, behavioral questions, salary scripts
Get both books for $9.99 (save $2.99):
The material stays free to read online. This is the organised, offline, print-ready PDF edition. Secure payment by PayPal; your personal download link is emailed after payment is confirmed. Digital product, no shipping.