JavaScript College

I am using the following code in javascript: let group = false; let internalId = 'someString… Read more Mdn Reference For Using Hasownproperty With Bracket Notation

const myObj = { a: [1, 2, 3], b: [2, 4, 6], c: [10, 20, 30] } Into const myCollection = [ {a:… Read more Efficient Way To Convert Object Arrays Into Collection In Javascript

I've searched everywhere and found similar questions with answers that didn't really addres… Read more Why Does Jquery Extend Deep Copy Not Recursively Copy An Object?

I have an array of objects named data, like so: data = [{'timeslot':'7pm-8pm','… Read more How To Iterate An Array Of Objects And Group The Property Values By Their Key Name?

Searched and tried and no luck so far. var newUsers = [{name: 'rich', id: 25}, {name: '… Read more Javascript Return Array From 2 Arrays Removing Duplicates

I have the following state in my app: const [activeChats, setActiveChats] = useState([ … Read more How To Modify Array Within Object In React Component State

I'm playing around with the limits of array and arrow functions and I'm trying to convert t… Read more Reduce Array To Object Using Arrow Function

I read the property of an object I want to access from a string: level1.level2.property OR level1.p… Read more Access To Object Property With Dynamic Name And Dynamic Nesting Level

I try to achieve an object inheritance, where each object shares the same functionality but contain… Read more Objects Contain Same Values But Shouldn't

I have a JavaScript class like this: Dog = (function() { var name; function setName(_name)… Read more Javascript Variable Inside Class Is Always Undefined

I am facing a strange problem in Javascript. It may be due to lack of understanding from my side. I… Read more Array.isarray() Returns False For Array Created With Object.create()

I've just learned the convention for popping off the first element of the arguments array (whic… Read more How To Unshift Or Add To The Beginning Of Arguments Object In Javascript

I need to sort through an array of objects and push objects with the same key/value pair to a new a… Read more Sort Through An Array Of Objects And Push Objects With The Same Key/value Pair To A New Array

I have a nested object and want to remove all key/value pairs if the value is null or undefined. I&… Read more Delete Null Values In Nested Javascript Objects

I would like to retain some properties from an array of javascript objects. Here is the array of ob… Read more Javascript Retain Certain Properties And Remove Other Properties From Array Of Objects

I have two arrays of objects that are different in length but share similar information. qrySearch… Read more How To Combine Two Array Of Objects Of Different Sizes, Based On A Property In Javascript?

This question might be too similar to this question I asked a few hours ago, but the issue I was st… Read more Comparing Two Arrays Of Objects For Duplicate Objects And Push It When It's Not A Duplicate In Javascript

I am working on javascript object. And I want to pass data to next array in a specific sequence. li… Read more Change Position Of Javascript Object Key And Data

I want to summarize an array of objects and return the number of object occurrences in another arra… Read more Summarize Count Of Occurrences In An Array Of Objects With Array#reduce

I want to use global variable 'x' in the below hook funcion. var x = 10; //global variable … Read more How To Access Global Variable In Function Hook In Javascript?