JavaScript Apprenticeships

I'm working on a small Chrome extension that needs to run in the background. However, I underst… Read more Chrome.extension.getbackgroundpage() Function Example

I'm using the onRightButton in a react-native NavigatorIOS. I'd like to be able to call a f… Read more Function To Call Onrightbuttonpress In Navigatorios - React Native

I have two variables namely date1 = Mon Nov 25 2013 00:00:00 GMT+0530 (IST) date2 = Mon Nov 25 201… Read more How To Compare The Date Part Alone From A Date Time Value

Reactjs, ES6 issue: Very simple onclick event in a .map function not working. When I inspect it, th… Read more Reactjs Es6, .map Function Not Triggering Onclick

I am working within some very strict pack-end limitations and have a client that is unrelenting in … Read more Getting All Characters After The Last '-' In A String

I'm trying to correctly interpret the response from a fetch call to an URL, that I think is a j… Read more How To Process Fetch Response From An 'opaque' Type?

Is there a way to define a 'member variable' as an 'extension object' instead of a … Read more How To Declare Member Variable As Extended Type In Typescript?

I want my validation control to be enable/disable with javascript. When I click on radiobutton list… Read more Enable/disable Asp Validation Control In Javascript

I have some CSS animation with keyframes on my page for fadein/out elements. The problem is that th… Read more How To Prevent Css Keyframe Animation On Page Load?

I've problem with decryption data encrypted in cryptojs. Sometimes it works sometimes not, if w… Read more Aes - Crypto Js & Php

In this example: angular.module('myModule', [], function($provide) { $provide.factory(… Read more Angularjs - Module Config Function

Trying to implement a custom select dropdown using select2 plugin Is it possible to have the select… Read more Different Display Value For Selecte Text Using Select2.js

I use the following code for generating the random number from 0 to 15. I use a function random() f… Read more Unique Random Number Generation Using Javascript

Scenario: We're using webpack 4 to create a bundle from our Javascript sources. We're no… Read more How To Make Webpack Accept Optional Chaining Without Babel

I want to update object i already have in parse.com with javascript; what i did is i retirevied the… Read more How Can I Update Current Object In Parse.com With Javascript?

How would I set cookies such that a video only plays automatically on the first visit only, afterwa… Read more Setting Cookies In Browser For Video Autoplay

I have a UIWebView set up containing my universitys intranet page, my code will pass in my username… Read more Uiwebview Passing Username And Password Into A Form

I'm trying to implement drag and drop behaviour using React and react-beautiful-dnd library. I … Read more How To Implement Drag And Drop Behaviour In React

Are they useful to know? How are they used? Solution 1: Regular expressions are not a JavaScript-s… Read more Where Are Javascript's Regular Expressions (regex) Used?

When I go to this url : (warning: some Ad-blocker is recommended) https://openload.co/embed/M4pSomd… Read more How To Fix An Error Of Website Iframe?

I am trying to use this slider: http://codepen.io/zuraizm/pen/vGDHl I need to have multiple sliders… Read more Multiple Sliders, Buttons Controlling All Sliders

I am currently practicing using Javascript/Dojo. However, I have an error that I am unable to solve… Read more Unable To Solve Error " Uncaught Syntaxerror: Unexpected Token O "

I've generated html and I need to restructuring the html using Jquery, like this: Original: Col… Read more Jquery : How To Move Td To Another Tr?

When you reach 1000 reputation on stack overflow you get an expendable usercard when you mouse hov… Read more What Is This Web Effect

I am new to GraphQL. Whenever I try to send args on (posts) child node like the query below, I get… Read more Graphql Unknown Argument On Field

Please see the JSFiddle code I already have. My issue is that I require to use a radio check AND a … Read more Javascript Query - Using And & Or With Radios, Checkboxes And Text Fields To Enable Form Elements

I am having a table contain the following structure: The status in thead having value with unique … Read more Jquery Insert Cell To Specific Position Of Tr Value And Td Value

I have a HTML Page, in which there are some hidden DIVs and these DIVs are visible vai view source … Read more How To Remove Hidden Divs From View Source Of A Page?

How can I compress my jQuery useful? I want to add a function to show an element when I hover anoth… Read more To Compress My Jquery

I have a TypeScript project, and I'm using TypeDoc to generate documentation for it. In my proj… Read more Linking To External Library Documentation With Typedoc

I have a photo album which cycles through a series of images when the user clicks on FORWARD or BAC… Read more Chrome Is Not Loading Img Src When Set In Javascript

I got a code for loading an image into a canvas, and it works fine, but when I try to iterate to do… Read more Loading Multiple Images Into Multiple Canvases

I have an ol3 layer with a style definition. I would like to use the same style for the select inte… Read more Openlayers3 Same Style For Selected Features (only One Changed Property)?

I'm trying to drawn a rect on canvas, but I want that canvas has lightly transparent background… Read more Adjust Canvas Background In Javascript

quick JQuery question, I've got a products page that the user can filter. Each time a filter is… Read more Jquery Stripe Odd/even Rows

The problem: I am using w3.css(if you enter now w3schools.com site is down for maintenance) for st… Read more Use Local Css File If Link To Online Css File Is Dead

I'm currently trying to validate a CSRformat via javascript regex and I'm currently stuck w… Read more How Do We Validate The Format Of The Csr Using Regex

here is my problem. I'm currently trying to customize joomla article content with some module. … Read more Why The Javascript Result Always Return First Value?

Why doesn't this code work? I'am using FF. Read more Getelementbyid And Null - Why?

So I am trying to figure out this puzzle: function fun1(){ var result = []; for (var i = 0;… Read more Javascript Puzzle: Scope

I'm using Express4 with a router that points to path /, and that is handled by a JS file named … Read more Socket.io Connection Keep Increasing Each Time A New Connect Has Been Made

I'm attempting to bulk delete a collection of backbone models like so... collection.each(functi… Read more Backbone Model.destroy() Limited

I am doing this first time. I have created an iframe on my page and I want the text from the iframe… Read more Get Data From Iframe

I don't think it matters for the purpose of this question what my exact setup is, but I just no… Read more In Terms Of A Stateless Front-end Client, How Secure Is This Jwt Logic?

I have a twitter bootstrap dropdown inside a div with the plugin jOrgChart. The problem I'm hav… Read more Twitter Bootstrap Stop Propagation On Dropdown Open

In Chrome's dev tools, there's a lovely interface where you can see all the event listeners… Read more Can I Remove Event Listeners With A Chrome Extension?

I have a list of images that is rendered as thumbnails after upload. The issue that I have is I nee… Read more Jquery/javascript - Get Image Size Before Load

I am following the google maps api documentation: https://developers.google.com/maps/documentation/… Read more Define Google Maps Before Using Its Methods

Seems that with handheld devices on the rise, one has to start taking them into account more and dr… Read more What's The Best Practices For Building A Mobile/tablet-compatible Web App

I am trying to wrap my head around this idea of 'argument passing.' In a book I am reading … Read more In Javascript, How Is This Argument Passed By Value And Not By Reference?

need to go through a JSON object which might or might not have properties fields it can be null or … Read more How To Loop Through Json Obejct And Return Keys And Values If They Are All Different Or Even Null? Vue, Javascript

I am trying to pass formData along with other parameters to a PHP script. Using the $.post method, … Read more Unable To Pass Formdata With Other Parameters In Jquery

I am trying to optimize a site which loads terribly. I already reordered, compressed and minified j… Read more How Can I Hide A Page Contents Until All The Images Are Fully Loaded?

First of all I think this is more or less the same problem as 'undefined' randomly appended… Read more "undefined" And "cache/xxx" Appened To Urls

When I check inputFieldDomNode.selectionStart it always returns some number, even if it does not ha… Read more How Can I Tell If A Text Input Field Dom Node Does *not* Have A Selection With Javascript?

I am trying to compress image size using JavaScript. but it returns canvas error. below is my code… Read more How To Compress Image Size In Javascript?

I have a problem trying to configure postrgres with nodeJs, i followed this tutorial and i get a er… Read more Include Unexpected. Element Has To Be Either A Model, An Association Or An Object