The issue in question relates to human readability and data organization. I would like to assign getters and setters as children of class field properties, however I can't get this to reference the class prototype data. I think this is…
So, I have two classes service-class & entity-class with private constructor & static async method, for creating new instance of class. My service-class create & call new entity-class instance and modified it with its properties. Example | This is NOT…
I'm encountering an issue with closing a child window inside a setTimeout callback in JavaScript. Despite successfully opening the child window using window.open, I am unable to access the newChild variable within the setTimeout callback function. Here's a simplified version…
I came across the following thing while trying to understand some concepts of working with closures. When I was reading about memoization/throttling, people were using func.apply(this, args) in closures. Here are some examples from 2 different sources: function memoize(func) {…
I write JS (well, EcmaScript), but only relatively rarely. When writing on a member function for an object, I naturally often use other member variables and functions multiple times; but I tend to avoid defining my own globals, and no…
I have been given a task at my internship , I have to create math operations like plus(), minus() etc. using this and new keywords. example:- one().plus().two().equalTo() , given line of code must return 3. I tried creating functions which…
<h1 id="title">Drum 🥁 Kit</h1> <div class="set"> <button class="w drum">w</button> <button class="a drum">a</button> <button class="s drum">s</button> <button class="d drum">d</button> <button class="j drum">j</button> <button class="k drum">k</button> <button class="l drum">l</button> </div> var tekan = document.querySelectorAll(".drum"); tekan.forEach(drum => { drum.addEventListener("click", play); }) function play()…
So as I am reading on the execution context in javascript and how does it works, everything seemed fine until I tried some examples on the this value of callback arrow functions. const printCard = function () { this.signatories.forEach((signatory) =>…
const rajat = { FirstName: "Rajat", middleName: "Kumar", lastName: "sahoo", birthYear: 1998, location: "Bhubaneswar", job: "Programmer", friends: ["Michel", "Jack", "James", "Juile"], calcAge: function () { this.Age = 2023 - this.birthYear; // `here if i creat the age object it give…
I am having trouble understanding "this" keyword behaviors in JavaScript (NodeJS - v16.19.1). According to this site, "this" keyword in the global execution context will reference the global object: // this is my entire index.js file, I run "node index.js"…