In other words: can JavaScript automatically create object parents? In an example where "testObject" is already created… let testObject = {} …this throws an error… testObject.parent.child.grandchild = { foo: ‘ya’ }; This works but is a lot of code… testObject.parent = {}; testObject.parent.child = {}; testObject.parent.child.grandchild = { foo: ‘ya’ }; Things get more complicated… Read More Is there a direct way to deeply nest in a JavaScript object?

I am currently learning JavaScript on javascript.info and I came across this statement: Link to the statement: statement But when I try this code with null in .prototype of constructor: function Rabbit() { this.name = ‘rabbit’; } Rabbit.prototype = null; // * let obj = new Rabbit(); console.log(Object.getPrototypeOf(obj)); // [Object: null prototype] {} I get… Read More Why null doesn't work in .prototype of constructor

I am using a popup lightbox plugin, the plugin generates next/prev buttons but it doesn’t put them in a container. I would like to wrap them in a containing element and have found the spot in the plugin where they are generated but I can’t figure out how to wrap them since they are generated… Read More JavaScript – wrap an object in an html container before appending

I’ve an array of objects: const arr = [{ “id”: “1”, “operation”: “ADD” }, { “id”: 2, “idmuFlag”: “Mercedes”, “operation”: “DELETE” }, { “id”: 3, “idm”: “Toyota”, “operation”: “UPDATE”, “idmuFlag”: “Ford” }, { “id”: 4, “idmuFlag”: “Bently”, “operation”: “DELETE” }, { “id”: 5, “idm”: “Skoda”, “operation”: “UPDATE”, “idmuFlag”: “Mustang” } ] const arr1 = arr.map(arrObj… Read More JavaScript rename object key based on condition

Want to print key values of object but it prints numbers. How to print on the screen key values. It prints key values but also prints numbers. import Link from ‘next/link’; export default function Home() { const menu = { lorem1: "/lorem1", ipsum1: { dolor2: "/dolor2", amet2: "/amet2", }, loremm1: "/loremm1", ipsumm1: { dolor2: "/dolor2",… Read More Want to Print Key Values of Object But it Prints Numbers in React

const rowData = []; const arr1 = [{ “bId”: “F1.1.4”, “bName”: “Mercedes”, “cId”: “150494”, “cName”: “Benz”, “flag”: “Maintain” }, { “bId”: “F1.1.4”, “bName”: “Ford”, “cId”: “150744”, “cName”: “Mustang”, “flag”: “Maintain” }, { “bId”: “F1.1.4”, “bName”: “Volkswagon”, “cId”: “4961”, “cName”: “Polo”, “flag”: “Maintain” }, { “bId”: “F1.1.5”, “bName”: “Isdera”, “cId”: “N/A”, “cName”: “Isdera”, “flag”: “Test” }… Read More JavaScript map id from one array of object to another

I have 2 items in my object, 1 and 2. structure concept I want to add to each item a second frame and to move the: second frame -> third frame, third frame -> fourth frame (notice that I simplified the question, so I would normally have many frames it shouldn’t be harcoded) window.onload =… Read More Move Javascript array key forward?

Finally had a problem that I can reproduce in small code. Result is in Console. Is the snippit background considered the same as Global? Copying an array into Object (from [] format) works (first example), but (second example) setting one element of an array in it and then copying it to another object property seems… Read More Copying backup Object seems to copy in reverse direction

I have the following js file where I’m trying to replicate a request I made through postman to the api url http://localhost:1777/api/test My objective was to simulate that request and have the response inside an object that I could see in the browser console. My poblem is that the browser console shows two objects instead… Read More Console log duplicated using UseEffect hook

{ "F1.1": { "add": [ { "id": 169138, "name": "volkswagen" }, { "id": 173212, "name": "skoda" } ], "delete": [ { "id": 175555, "name": "mercedes" } ] } } I’m not been able to get length of add and delete array F1.1 is dynamic value, hence we cannot rely on it. How can we get… Read More JavaScript dictionary data length