#JavascriptInterview #Javascript #FrontendInterview Javascript Interview Questions on Async Javascript including Promises, Callback, async/await etc will be discussed in this video including its in Polyfills, Output Based Questions, promise combinators, callback hell, etc. ➡️ Book an Interview Preparation call with me - https://topmate.io/roadsidecoder 🟦 Follow me on Twitter and u will clear your interview 🤓 - https://twitter.com/piyush_eon ⭐ Support the channel and learn from me One on One - null 🔗 Blog for the video - https://roadsidecoder.hashnode.dev/javascript-interview-questions-promises-and-its-polyfills 🔗 Functions Interview Video - https://www.youtube.com/watch?v=btwFJT_xzdg 🔗 Javascript Interview Series -    • Javascript Interview Questions   🔗 Cars24 Interview Experience - https://www.youtube.com/watch?v=vxggZffOqek 🔗 Unacademy Interview Experience - https://www.youtube.com/watch?v=abbdJ4Yfm54 🔗 Tazorpay Interview Experience - https://www.youtube.com/watch?v=q-ylRxSxGcY 🔗 MERN Stack Tutorial with Redux - https://www.youtube.com/watch?v=IQXjO0t4XRM 🔗 React Beginner's Project Tutorials -    • React JS Beginners Project   ------------------------------------------------------------------------- 00:00:00 Intro 00:00:36 What is a Promise? 00:01:36 Synchronous vs Asynchronous Code 00:04:25 Asynchronous Code Examples 00:05:32 Callbacks 00:07:10 Callback Hell 00:09:56 Promises 00:13:48 Promise.resolve and Promise.reject 00:15:10 Rewriting callbacks with promises 00:18:03 Promise Chaining 00:20:08 Promise Combinators 00:20:57 Promise.all() 00:23:01 Promise.race() 00:24:01 Promise.allSettled() 00:24:43 Promise.any() 00:25:41 Async/Await 00:29:10 Get Interview Preparation call with me 00:29:43 Ques 1 - What's the Output? 00:31:38 Ques 2 - What's the Output? 00:33:19 Ques 3 - What's the Output? 00:34:36 Ques 4 - Promise Chaining Output 00:35:54 Ques 5 - Promise Chaining Output 2 00:38:05 Ques 6 - Promise Chaining Output 3 00:40:33 Ques 7 - Implement this Logic 00:42:30 Ques 8 - Rewrite using 'async/await' 00:43:59 Ques 9 - Solve Promise Recursively 00:46:49 Ques 10 - Promise Polyfill 00:59:55 Promise.resolve() and Promise.reject() Polyfill 01:00:54 Promise.all() 01:06:30 Promise.race, allSettled and any Polyfill 01:07:06 Get Interview Preparation call with me ------------------------------------------------------------------------- Special Thanks to our members - Srinivas Ayyagari