JavaScript Controls

Both examples work in Chrome and Opera, but fail in Firefox 56.0. I want to set the files FileList … Read more Set Filelist Of Fileinput In Firefox

I have been caught off guard by Firefox's lack of window.event ... namely Solution 1: Here'… Read more Workaround For Firefox's Lack Of Window.event?

I faced a very interesting issue. I'm trying to set the focus on a input field using Javascript… Read more Not Setting Focus To Text Field In Firefox

I have a huge asp website project and for its popups, used from showModalDialog. Few months ago moz… Read more Dialog.showmodal Not Supported By Mozilla Firefox Any More

I'm trying to set the content of a iframe using javascript. I've the html string. And I'… Read more Setting Content Of Iframe Using Javascript Fails In Firefox

I have developed an add-on for Firefox and Chrome. It has content scripts. I want to access them in… Read more How To Access Add-on Content Script In Firefox Console?

I'm creating a Google Site with Google Apps Script 'Enum Sandbox Iframe mode'. In Googl… Read more Referenceerror: Google Is Not Defined - Google Apps Script Error In Mozilla Firefox

When do browsers download the sourcemap for a minified file? I am struggling to find documentation … Read more When Do Browsers Download Sourcemaps?

How do I include jquery and other scripts in my firefox extension? I know this topic is a copy of m… Read more Adding Jquery And Other Js Libraries To Firefox Extension

I'm playing around with HTML5. For that purpose I created some small Javascript widget using lo… Read more Did Localstorage Just Break In Firefox 6.0.2 On Mac?

I am writing a JS library, and there are two things that have been on my mind for quite some time t… Read more Optimizing Conditionals/if Blocks, What Is Preferable From A Performance Point Of View?

Say a webpage has a function like: function abc (){ return 'abc'; } How would I execute an… Read more Execute Function On Webpage?

I have a web page with file input field.I wanted to , Upload a image file. create image element us… Read more "canvas.todataurl("image/png")" Not Working Properly In Firefox

I have a very simple webextension that is supposed to open a local page in a new window when a butt… Read more Javascript Does Not Run On Local Page

There’s an error on our XRM form when it is opened from a browser other than IE. You can see the un… Read more Xrm Setdisable() Does Not Work On Browsers Other Than Ie

I have array containing random numbers. When I trying to sort this array via .sort() method, the re… Read more Javascript. Array .sort() Method Returns Different Results For Chrome And Firefox If Array Contains Duplicate Numbers

I am loading a local instance of localForage and using it with Promise chains to save basic data. A… Read more Localforage Setitem/getitem Unreliable In Firefox / Firestorage Plus

I am porting my Chrome extension over to Firefox. It has a paste to clipboard function. But, I have… Read more Copy Text To Clipboard From Background Script In A Firefox Webextension

I want to write a Firefox extension, with copy to clipboard and execute an external program with se… Read more Copy To Clipboard In Firefox Extension Not Working

The problem is very simple, see JSfiddle. SpeechSynthesis works fine in Chrome, but mysteriously st… Read more Speechsynthesis Stops Working After First Utterance In Firefox, But Works In Chrome