I gave my HTML codes on the top. JS Codes are on the down: In this case, When I hover over the cardBody element, the output must write “mouseenter”. And when I leave with the mouse, the output must “mouseover”. However, I get an error Uncaught TypeError: Cannot read property ‘add…
Tag: dom-events
Remove hover effects when scrolling
I have been working on an application. There are multiple components on the page. The content inside them is scrollable. The expected functionality is when I scroll inside the component the hover effects on different elements should be disabled. After searching in the internet I have a working solution. I hav…
Flask onchange event or need Javascript framework?
I used to build Microsoft Excel apps using VBA, and events like _Change, _Click,… I first switched to JavaScript and frameworks but I got lost with the asynchronous side. So I moved to Python and Flask, and I like it so much. But when I do frontend, it is hard to build dynamic forms because I dod’…
Call a function “dynamically” in JS with something like
I’m trying to learn how to dynamically create objects and apply functions to them with JS and HTML. How can I use a <select> dropdown’s text/value to call a function on an object as directly as possible? In the past I’ve used functions in an array, if then statement, or conditional cha…
Add Event Listener not Connecting to Button
I am trying to click a button, that will then change the display of overlay on my page to none. In the console it is telling me that, startButton.addEventListener is not a function. Can someone help me find the bug? Answer Get your button with getElementById, it works
Vue.js working with input from a barcode scanner
I’ve stumbled upon an interesting case in a web-module, designed for both user- and machine-input (via a barcode scanner). Here is the code from Vue’s module: The scanner can trigger keyup.enter at the end, but it inputs the barcode so fast, that the model does not update. Only by adding 10 ms del…
Can I use function generator as event handler?
I have a list of HTMLCollection: And I have a script of JS: My goal is to write a keyboardEvent based on .addEventListener(“keydown”, generatorFunction) method whereby event handler would be presented as function generator i.e. generatorFunction presented above. Is it good or bad practice? Answer …
Bootstrap button plugin conflicting with Vue checkbox click event
When I add bootstrap.min.js to my Vue application my checkboxes @click event is not being initiated. More specifically when using bootstrap’s button-group with data-toggle=”buttons” If I remove bootstrap.min.js then the checkbox click event works as normal. What is causing this? Link to Code…
Detect an URL change in a SPA
I would like to listen to path changes in a SPA which is not maintained by me. I found one solution here: https://stackoverflow.com/a/44819548/7042552 But still, it seems kind of “hacky” to me – but still my implementation is like this: Is there a better or more generic way to listen for pag…
Using JavaScript Onclick Event to pass Data to views.py in Django?
I Have a bit of idea about this to use ajax with the JavaScript to send data to views.py but I am not able to do that. So what I am trying to do is I have put onclick event on the image so by clicking on that image I should be able to send some value to views.py. This