How do developers structure their programs if they want to have a top-level error handling function? The immediate thought that came into my mind was to wrap a try..catch to the main function, however, this does not trigger errors from callbacks? Answer In javascript you can override global onerror, catching …
Category: Questions
Apps Script: How to limit the scope of a FOR LOOP?
The script below runs whenever any cell in column E (so, array [4]) has been edited. And its only purpose is to add some additional information to the subsequent empty cells of the row that has been …
Loop through pages to return all the product links
The goal is to obtain all product links from all pages in the pagination. So far I have managed to print information to the console with console.log (links). However, since I am completely new to this field and completely inexperienced, I have a problem how to pass some value back with the return command. ret…
Adding new line after every 15 characters in JavaScript
I have used following method to do the changes, but I’m getting additional spaces after adding the new line. I used trim(), but it makes the value meaningless. Answer Are you talking about the space on the last line of the output Throt ? There’s actually no more data there, but if you want your in…
How to handle event element in container?
I want to click btnToggle, Navigation will run but I don’t know why this code sometimes is successful, sometimes is unsuccessful. Help me please, thanks all Answer You’re pretty close. Because you attached the event listener to document, your callback function will actually run if you click anywhe…
react JavaScript ternary conditional operation
After I import the data as json from the detail page, in ProductDetail > brand > shoes > size.length get the length length is outputting in JSX. But there is a problem. There are also products without shoes data for each detailed product on the detail page. I want to treat products without data as 0 …
querySelectorAll selects all similar classes
Calendar is using 3 different classes to style its child elements: “old day”, “day”, “new day”. Trying to querySelectorAll element with class name “day” also captures the other two classes, so when i say something like: I will get click on old 28th instead of cu…
Message collector in Discord.JS not running
I have a basic command for testing the message collector feature on my discord.js v13 bot. The bot doesn’t crash when I run it, but the feature doesn’t load properly, as it has an error. The error is in the line inside the collector function when I call filter. The IDE gives me an error: Type R…
I need to make this button have delay when i click then to go others pages
when i add its not delay then removes it. and its delay, but what should i do to make this button have href to click and delay then joining other pages (i’m newbie) conclude that I need when I click and reload 3 seconds to join other pages I do. I tried many things but it didn’t work. I’m ve…
track.stop is not turning the camera off anymore
I have a webpage where I want user to take a picture with his laptop/phone camera. Once he clicks on a button a modal is shown and the following js will start the camera stream to take the picture: This is triggered by Then when I close the modal I want to stop the streaming but the led indicator next