JavaScript Guide

Why is firstHalf.indexOf(secondHalfArr[i]) 0? Solution 1: The indexOf() method returns the positi… Read more Why Is Indexof(char) Is 0 If The Value Exists?

It seems like there has been a change to some recent version of Chrome and Firefox*, and now Javasc… Read more Javascript Performance When Running In An Unfocused Tab

For certain URLs (e. g. http://www.nyest.hu/iframe/240/10 ), IE8 (and older) never stops loading wi… Read more Ie8 Hangs On Document.write With "this Command Is Not Supported"

I followed the instructions specified in the V1.3 documentation to have a default option in one of … Read more Ng-options Is Hiding The Blank Value With Angularjs V1.5

i need to trim this string -> http://hokuspokus/ixdebude/ix and i exactly Need this part of the… Read more Regular Expression For Link

Using Parse.com and JavaScript SDK. The below code saves the data as a new user object in parse. Bu… Read more How To Update A User Object In Parse.com Not Create A New Record Object?

Bit of a strange question here i know. but i wanted to know if some kind of standalone engine for j… Read more Running Javascript Standalone Engine?

I am trying to display a popover on click over a react-select selected value element as follow : … Read more React-select - Can't Stoppropagation On Valuerenderer Component

I want this out come Input =|= Output ============================================= … Read more Remove Space/spaces Between Two Words

I have created a highly interactive graph. all of the interactions have been achieved without re-in… Read more Updating Flot Data And Axis

Here's my Scenario: I have a value for DateTime in this Format only: '2017-05-01T07:40:00.… Read more Convert String To A Datetime Format Without Converting It To Your Local Time

I'm making a warn command and I've run into a problem with the role giving. First, I have a… Read more How To Add A Role With An Id That Is Saved In An Json File Discord.js V12?

I have a question related to jQuery .remove() method. Consider this code: var x; $('#btn1')… Read more Difference Between Remove() And Detach() In Jquery

I'm trying to scrape this page with HtmlUnit. In the Xml, it says 'You are currently browsi… Read more Web Scraping Javascript With Htmlunit - "you Are Currently Browsing With Javascript Turned Off"

I am using the jquery validate plugin to create a validation method for all forms in an application… Read more How To Create A Universal Jquery Validate And Reset Function Call

How to set the line chart setting so lines begin at x:0 , and not in some random way? Is there a p… Read more Google Line Chart Starting Coordinate?

I'm trying to upload data to dropbox via webbrowser (FF 42.0, PhantomJS 1.9.8) and dropbox v2 a… Read more Using Dropbox V2 Api From Browser

my question is: why does this log 'promise {pending}' despite of i used async/await? I chec… Read more Async/await Return Promise { }

I am using ant design in my demo application. I want to add dynamic validation of mobile number in … Read more How To Add Dynamic Validation In Form Using Reactjs

Good evening, i have a HTML form that contains a submit button that does something other than execu… Read more How To Let A Submit Button In A Form Do Something Before Executing The Action Of The Form

I tried to require materialize in Vue and Laravel in bootstrap.js I have window.Materialize = requ… Read more How To Integration Materialize Js In Vue And Laravel

On click of download button beside name of a file I am getting the file content from backend . This… Read more File Download At Front End Using Angular Js

I have a jQuery script that appends the Instagram blockquote, but it doesn't work on the second… Read more Jquery Appending Instagram's Blockquote Embedding Dynamically Doesn't Work

I really want to load the source of a video from my applications cache. In the native part of my ap… Read more Cordova File Plugin To Load Video Source From Ios Cache

I am trying to resize a div with jquery and have the alsoResize trigger: I tried changing the width… Read more Jquery-ui Resizable, Programatically Resizing

I have a function to get the values of the selected check-box from the xul file(Lets say tree.xul).… Read more Pass Variable Values From Child Xul Window To Parent Xul Window Using Javascript

In an earlier thread about inserting brackets around 'comments' in a chess pgn-like string,… Read more Regular Expression Doesn't Work Correctly In Javascript?

I need to include a js file in a single-file shiny app. I tried to work with a two file app (classi… Read more Include Javascript File In A Single-file Shiny App

I have a code like this: I wanted to make it alert its own alphabet(value), but it doesn't wor… Read more Javascript String Undefined

var name = [ { firstN: 'Dave', lastN: 'Mike', fullName: 'Dave Mike }, { … Read more Searching For Unique Properties In The Array Object

How to write to a file in Javascript(on server)? I also need to read the file. And here is my code:… Read more File Management In Javascript

I have a question about Yii framework, i have problem with submit button, i want to given two fungs… Read more Give Two Function In One Button In Yii Framework

I want to have bookmarkable URLs that the browser can capture and handle. If I just use Backbone.hi… Read more Can't Get Backbone Routes Without Hashes?

I'm using Dropzone.js to handle uploading of files. I would really like to be able to modify th… Read more Dropzone Js Change Filename Before Upload

I have this code... function a(options) { for (var item in options) { if ( ! options.has… Read more How Can I *unpack* An Object Into A Function's Scope?

I have an array of data like this: var nameInfo = [{name: 'Moroni', age: 50}, … Read more How Can I Update A Row In A Javascript Array Based On A Key Value?

The example below is a simple example of an iframe which uses window.parent.[turn designmode on] (t… Read more Ie8 Iframe Designmode Loses Selection

I was trying to understand an example written in JavaScript. Actually, I'm reading the book Elo… Read more Need Help To Understand An Example Of Recursion

I am working on an image generator using HTML5 canvas and jQuery/JS. What I want to accomplish is … Read more How To Create An Image Generator For Combining Multiple Images?

Let's say I have a bunch of HTML like below: bla bla bla long paragraph here bla bla bla more… Read more Is There An Easy Way To Convert Html With Multiple
Tags Into Proper Surrounding

Tags In Javascript?

I am trying in the for loop to access the value of the i with which the callback function uses. How… Read more Javascript - How To Work With The Iterator In A For Loop With Callbacks

I have a connected database in my NodeJS with 723.1 MB in size but facing the same trouble about me… Read more How To Overcome Nodejs Heap Memory Error?

The following is a series of else-if statements, where once evaluated, appends data to an array wit… Read more How To Simplify Else-if Statements Where Text String Evaluation Has The Same Name As Array Getting Appended To? (javascript)

Is there some way that I can get stack traces in a browser every time an HTTP request is made? I… Read more How To Get Stack Traces For Xhr Calls In A Browser?

I'm trying to get the tabs in this code snippet to highlight just the top of the active tab and… Read more Css Issue With Jquery Ui Tabs

In JQuery, if I do this... $('a').click(function(){ // Do something }); ...the click … Read more Attachevent Or Addeventlistener - Stored Where?

I hope someone can help with this quirky issue I am having with the Opera Browser, I have version 1… Read more Resizing An Image Using Javascript Running In Opera Browser

I created a dashboard with widgets awhile ago and I'm now revisiting how to persist the the wid… Read more Save Jquery Widgets To Sqldatabase Using Json

I would like some advice on how to slim down this switch: switch (lotUser | winningLot) { c… Read more Simplifying This Javascript-switch

I'm developing my first gnome-shell-extension currently. In the extension, I want to execute a … Read more Multiple Arguments In Gio.subprocess

I have a side panel for my google maps api v3 web app and I would like to add the capability to cha… Read more Change Location To Preset Coordinates And Zoom With Click Of A Button

I am developing an application on Sencha Touch 2.0.1 & PhoneGap. I need to catch and transfer a… Read more Android - Is It Possible To Fire A Native Intent From An Application Wrapped In Phonegap

I tried many ways to create a simple jquery ajax form but don't know why it is not submitting a… Read more Jquery Ajax Form Doesn't Work

How should I escape attributes in the css/js attibute selector [attr=value]? Specifically, is this … Read more How To Properly Escape Attribute Values In Css/js Attribute Selector [attr=value]?

Easiest to explain with code: ##### module.js var count, incCount, setCount, showCount; count = 0; … Read more Node Modules - Exporting A Variable Versus Exporting Functions That Reference It?