JavaScript Exercises

This is my code: index.html: ... Solution 1: In PhoneGap, confirm is does a… Read more Confirm Dialog Returns False Immediately

I am trying to connect to Firebase. Code from firebase.js: import * as firebase from 'firebase/… Read more TypeError: Cannot Read Property 'length' Of Undefined - Firebase

I don't understand pretty well how the hidden fields arrays work, I have this input: How ca… Read more Add And Remove Values In A Hidden Field Array

There are three ways to access JavaScript Object property. someObject.propertyName someObject['… Read more Regular Expression To Detect Double Quoted Javascript Object Properties With Brackets

I have the next site: id.factor.ua If you open it in IE-11, you cannot see sub-menu in header. Pl… Read more Menu In WP Doesnt Show In IE-11

I am trying to enable PWA on a web site that requires authentication (login tokens managed via Cook… Read more Cookies Not Sent With Request For Web App Manifest.json

Here I have a promise that simply resolved. let promise = new Promise((resolve,reject)=>{ r… Read more What Happen When We Return A Value And When We Return A Promise.resolve From A Then() Chain, In The Microtask Queue?

I am trying to fetching eventbrite's API formatted as JSON, the issue is JSON can only have 50… Read more Parsing More Than One Page From API

I am trying to fetching eventbrite's API formatted as JSON, the issue is JSON can only have 50… Read more Parsing More Than One Page From API

Ext JS base and widgets together offer me the solution I've been looking for. The Ext JS librar… Read more Is It Possible (and How) To Remove Unutilized Widgets From Ext JS Library?

What is the best way to group objects by date and add them all up to create a single JavaScript obj… Read more Group And Sum DateTime Object By Date In JavaScript

I have a simple slideshow that I've made on a client's homepage, using setInterval to time … Read more Pausing SetInterval When Page/ Browser Is Out Of Focus

I'm writing a Chrome extension, used to switch between different search engines. The manifest.j… Read more How To Redirect Current Tab's Url In Chrome Extension?

For many reasons, I have to open up XUL in a tab, instead of using a standard window. I wish to sen… Read more CustomEvent() To An XUL Tab - Firefox Addon

I was having array as example :- for an example var a =[{name :'Adi', age:23},{name:'… Read more Deleting Object Keys And Reassign Different Keys Is Good Approach On Iteration Of Thousands Of Objects Loop?

I have a situation where I want to access the user data only if he or she is logged in. I have the … Read more Sequelize: How To Access [object Promise] Or Return Value From Promise?

I have a code that goes like this on HTML: Nov Solution 1: Why not simply use CSS? ul .cal… Read more Selecting Siblings On Hover

I'm having trouble using mixpanel.track_links with links added dynamically (after page load). F… Read more Mixpanel Track_links Does Not Work With Dynamically Added Elements

I want to check if the cookie is existing or not The problem is it is always returning to null if i… Read more Cookie Always Null?

I am trying to learn some chart rendering techniques for front end web development. There is a d3 t… Read more Javascript D3 Render Chart