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Flatten object javascript recursively

May 2, 2023 · 1 min read · Interviewer : Can you flatten an object, Please take the below as input const obj = { name: "test", address: { personal: "abc", office: { building: 'random', street: 'some street' } } } an...

Array-Flatten Array Javascript interview questions-1

May 1, 2023 · 1 min read · Frontend Interview or Nodejs Interview it's the most frequently asked interview question. function doFlat(){ let flatten = []; function flat(arr){ for(let i=0; i<arr.length; i++){ const item = arr[i]; if(Ar...

Javascript Array Polyfills, How to create polyfills in JS.

May 1, 2023 · 2 min read · In my interview journey, I have seen 80% of the company asking about this hot topic called polyfills. So before applying to a job interview, you should have a thorough understanding of polyfills. But you might be thinking why companies are asking for...

What is the Promise of Javascript and how to use it effectively?

May 1, 2023 · 2 min read · What is a promise A promise is an Object that adds the callback functions once it gets resolved (success or failure) instead of passing the callback function as a parameter in the function. Basically with a Promise, we handle the asynchronous flow of...