How to create an event that when a div or it’s child elements clicked create a border around the whole div in vanilla Javascript

I have a container and inside of it I dynamically create divs. Every created div has 2 p elements inside. How can I add an onclick function in every created div so when click either the div or the p …

What’s wrong with the addEventListeners

the vector should be able to be pulled and repositioned. ugh!. I have it up on fiddle at jsFiddle var canvas = document.getElementById(‘cv2’), c = canvas.getContext(‘2d’); var wide = canvas….

Why does addEventListener and removeEventListener inside useEffect() require an arrow function?

I’m trying to set onTop state to true if the user has scrolled to the top and false otherwise. I tried the following. function Test() { const [ onTop, setOnTop ] = useState( true ) const …

Basic keyboard functionality for movement of object

I am unable to figure out what is wrong with my code. I have another example I was able to get to work but it didn’t use constructor objects and this one does. That’s about the only different I can …

Uncaught TypeError: Cannot read property ‘addEventListener’ of null at app.js:2 with checkbox [closed]

I created a checkbox in my html page : And I want to add the class “darkmode” when the checkbox …

Can’t add an event listener to an element from an API

I am building a trivia webapp using an API and i want to add an event listener to the button with the correct answer so that when the user clicks it it will display a message saying they’re right and …

What am doing wrong in here?

Input value always gets into if condition first even am parsing it to parseInt() and when page refreshed with a number it gets into else condition, like its not registering the inputValue at first …

why my last.addEventListener(“click”,nextLevel) not working?

https://codepen.io/demi-chen/pen/RwGPgxv let last = theLeftSide.lastElementChild last.addEventListener(“click”,nextLevel) console.log(last) =====> it does show ……why …

I would like to make the submit button disable just after submitting

I would like to make the SUBMIT-BUTTON disable just after submitting. Here is what I wrote and it doesn’t work. Could you please give me a clue what the problem is?

<form id="…

Calling .addEventListener(); inside a function fails to actually create said event listener

I’ve been using the line canvas.addEventListener(“click”, funcName, false); without issue for my program, but recently I decided that I would sometimes like to remove said event listener and …