Develop Reference

PgAdmin for Windows in the latest version (4.28) doesn't start anymore, hangs in the loading screen and shows JavaScript errors in the browser console

PgAdmin in the latest version (4.28) doesn't start anymore, hangs in the loading screen and shows JavaScript errors in the browser console. What can I do?

The solution is simple although I don't really know why it occurs from that version on:
Open the registry editor (Search for regedit.exe)
Run it as administrator
Navigate to Computer\HKEY_CLASSES_ROOT\.js
Adjust Content Type from text/plain to text/javascript
Restart pgAdmin and it should work again.
Maybe, you will have to clean your browser cache or restart your computer as well (Thanks to the Kassym and Bruce).
As already I said, I have no idea why or how this happens, maybe someone from the team can add this as a comment here and I will update my answer.

Chrome, even in incognito won't refresh with new changes to javascript

I'm growing frustrated with the whole mix of Spring Tool Suite, Tomcat and Chrome. I'm working on a website's back end and I'm having all sorts of troubles getting my webpage to reload properly when I make changes to the JavaScript. I've made a fix to a problem in my code and when I go to preview, the error is still there. When I inspect the JavaScript in the Chrome Dev Tools, I see that it is still loading the JavaScript before I made the change, despite me having saved the file. I've rebooted Tomcat, I've been using Incognito mode, I've been deleting my cache and yet even in incognito, Chrome won't dump the old JavaScript file for the new one.
It's getting frustrating, because I waste time with every change I make with the JavaScript trying to wrestle with Chrome and Tomcat to get my webpage to use the most recent saved version of my JavaScript. I don't know if this matters, but I'm not writing my JavaScript in STS with Tomcat and my Java code, but it is in the same folder as my project and when I open it in STS, it always has my most recent save changes anyways.
Is there any fix to this?

Chrome Developer Tools can't see javascript

So I am having this really weird thing where my javascript doesn't show in my sources window. If I set a debugger in my js and then reload the page, it will break and I can see the javascript. The weird thing is that instead of the tab being labeled MyJavascriptFile.js it reads [VM](62) or some other number. I have tried reinstalling chrome and it didnt fix my problem. It didn't used to be like this, any ideas what is going on? Its just really annoying to have get to my javascript by adding debugger statements.

I'm having this problem right now. Must be a bug in Chrome. All you have to do is load the console (f12) then reload the page whilst the console is loaded. You can now see your code.

The weird thing is that instead of the tab being labeled MyJavascriptFile.js it reads VM or some other number.
This is because you are accessing your script through localhost, and therefore running into security policies. If you host your file at an IP or domain name, you'll be able to debug normally again.

See stored cookies or debug in browser

I have made a webpage that stores cookies to remember what ID a user has put in a scheme viewer. It works in desktop versions of IE, Firefox and Chrome. But when I try to visit it with Android or iPhone it doesn't work.
What I would like to know is how you see stored cookies or how you debug JavaScript/HTML/CSS. If I look at errors in desktop Firefox I get no errors for JavaScript and CSS.

I recommend you use the remote debugger built into the chrome for android app.
e.g.
Start adb with your phone connected via usb (usb debugging enabled)
Launch chrome, goto settings, developer tools, enable remote debugging.
On your pc in command prompt execute adb forward tcp:9222 localabstract:chrome_devtools_remote
Navigate to localhost:9222 from your pc for live interaction/console from your phone.
Source: https://developers.google.com/chrome-developer-tools/docs/remote-debugging

well i believe that you can't quite view the cookies of the browser in android. are you sure you have cookies enabled? (menu>more>settings>accept cookies should be checked). or if you're using javascript to set the cookies, you'd wanna make sure javascript is also enabled.
to debug, all you can really do is get the cookies via PHP or javascript and print them on the webpage. if they're blank, you for sure know the cookies aren't there. if you wanna see if the javascript is being run at all, just put print a "hello world" to the page at the line above where you set the cookie. (same concepts for php, use an echo)
it's a little fishy that desktop works and not mobile. it could be the fact that mobile browsers aren't rendering the page correctly though this is probably not the case. i would try debugging first and see if your setcookie code is actually being called by with the mobile browsers
hope this helps!

For Android 2.2 or 2.3 you can try this:
Type about:debug in you url bar while on your page;
A javascript debug bar will be opened on top of your url bar;
Type in console.log(document.cookie) and hit evaluate > It should print the cookies
Bear in mind that the js debug bar on Android will only show once the web app logs something ( e.g. if a js error occurs or if you trigger it via console.log so you might want to trigger it inside your app to open)
For Android above 2.3 you have more debug options ;)
EDITED:
As per Zeb's answer check here: https://developers.google.com/chrome-developer-tools/docs/remote-debugging

Javascript debugger issue in VS2008

I'm having a really annoying problem with debugging javascript with VS2008.
If I simply press F5 (or choose 'start Debugging' from the Debug menu), the iexplore process is attached, but no breakpoints break in the scripts. The Script Documents tree doesn't even appear in the solution explorer.
I already know:
I can set a breakpoint in Javascript just fine. It does NOT show the "This point will not be hit" message.
Calling the debugger through using the 'debugger' keyword works fine, but attaching to the iexplore process doesn't since it gives a "process already attached to a debugger" message.
Using the manual 'Attach to process...' works just fine. The Script Documents appears as well.
The project has recently been converted to a Web Application from a WebSite.
I already tried:
Clearing the IE cache.
Shutting down VS2008, Stopping the IIS and deleting the temporary asp.NET files restarting both IIS and VS2008 afterwards.
Setting IE7 as the default browser both for windows and for VS2008.
Resetting my user settings for VS2008.
Checking that IE script debugging is enabled.
Nothing has worked so far. While Attaching to process isn't too taxing, it is very annoying when I'm used to just hitting F5.
If anyone can think of a solution, please please please (I'm begging here!) let me know!

Is silverlight debugging enabled on the website project properties? This will disable Javascript debugging.