TheButton | Who last pressed TheButton | Frontend Framework library

First of all, I've checked all the similar questions on this site and found nothing relevant. In most of the cases, this error happens when you use

I'm new to JS. I need help on line 2...How do I go about getting the value of an independent variable when a button is clicked? Basically var i is incremented every 100ms and I want to capture what its value is when a button is clicked. Thanks plenty!

I've written a program that should display an image of a beverage or an alert window depending on the user's age input. The problem is that regardless of what value is submitted it only executes the 'if' portion of the statement. None of the other conditions are being checked prior to execution. I have tried using getElementById with the element id in place of querySelector but the program did not run at at all. I have tried querySelector with the button tag as well as trying the input tag. That also did not work.

I know the following isn't the normal Qt pattern, but I'd like to create/direct a main-thread GUI element from a non-main-thread.

The goal is to launch a standalone thread that lives for a long time and does its own thing. I don't want to put hooks in my main window for every conceivable GUI thing a sub thread might do. I want the sub thread to be able to show asynchronous notifications for example, deal with things in the background with progress bars, etc.

I create a worker object and move it to the secondary thread. When the thread starts it signals to the worker object to instantiate a wrapper for a QProgressDialog to simulate the secondary thread 'doing its own thing'. This wrapper then gets moved back to the main thread, and an event is posted which causes the wrapper to actually create the QProgressDialog, which happens in the main thread. So far so good. Then from within a long running loop in the secondary thread I emit a signal, expecting it to cross the thread boundary and update the QProgressDialog. The signal does appear to arrive at the main loop's lambda which is connected to the signal, but it doesn't arrive at the object which was moved to the main thread. Interestingly, I can post an event to update the progress, so I know the event loop is running. I have tried numerous variations of default and queued connections, connecting before and after moving to a new thread, without the actual gui component (just debug text), stack-based vs. heap objects, etc. My understanding is that Qt automatically determines if the receiving object is in a different thread from the sending object, and if so, posts an event which is picked up by the event loop. Could the issue be that I start the main thread (QApplication::exec()) after starting my sub thread?

In the below code, the debug msg in main.cpp correctly receives the events and prints the message, so the signal is crossing the thread boundary. It's just not reaching my wrapper object. Why not?

thanks.

Main.cpp

This is the simplified version of my actual code.

There are three checkboxes and buttons (each numbered 0, 1, 2) and a submit button. Put it simply, if you check checkbox number 1 and 2, click submit, button 1 and 2 will be colored. Now you could click any of the colored buttons, it should print 1,2 into the console.

If you put any other combination of checked checkboxes it should work the same way.

When I used JS to first add and then delete an image from the browser I anticipated that the screen would render clear when I left the page and then returned using the back button. However when I returned the image was once again present on the screen. This happened despite the fact that the screen is set to start clear, i.e. and before I left I used the Delete Image button to remove the image that I had added. For some reason the image was there again.

How to recreate this behavior:

1. Open Page 1
2. Choose an image file from your system
3. JavaScript will set the value of to your image and display it
4. Click the Delete Image button and the image will be removed
5. Click the Link To Page Two button
6. Use the back button on your browser and when you return the image will be on the screen again
7. If instead of the back button you return with Link To Page One the screen starts fresh without an image

page-one.html

Is there a way to stop the buttons activating the onClick? I've tried zIndexes, but they are not working.

I migrated from Material UI 4 to 5 Beta in my react app. From the documentation (docs style library) I can see that now I can use emotion, but when I use it I receive a message in the css attribute of the element where I use it.

My code:

I am writing simple web-site with js-client and a server side(python) I did everything to remove CORS error but nothing works. I wrote all needed headers for this but still get this error. So web-site should send a request to a server and get answer. Error: