I try to adjust the window.innerwidth according to percentage but I don’t know what to do. MY goal is depending on the size of window.innerwidth, change the backgroundcolor of html. window.innerwidth can’t use percentages when comparing? I tried like this. Answer “90%” isn’t a va…
Tag: dom
Get html elements inside shadow root using javascript
I have example HTML code: And with this code I can access to shadow root element parent container: But can’t get elements inside shadow root container using this command: Answer You have to navigate to shadow-root first then you can get it:
Javascript failing to load properly when in
Code is not working and I can’t seem to figure out why. I have to keep the javascript in the html head because it is required and I believe that’s where im going wrong and it’s not loading properly.The window onload is something new for me and i’m not sure if that would be the correct …
Using Spies and Mocks on complex objects with Jest
I’m fairly new to testing and writing tests for a currently uncovered javaScript codebase using Jest. The code covers some niche use cases, as its conditionally injected and executed by the browser during page load. Anyway, I’m having issues mocking up custom objects. Here’s the function in …
Why DOMContentLoaded handler can block first paint?
There is a similar question that wasn’t resolved. I’ve encountered a situation when handler that listens to DOMContentLoaded can block first paint. Sometimes it blocks, sometimes it doesn’t I tried many times cmd + R to see it. Is there any explanation to this behaviuor? Also I recordered a …
Can I get the include path of the js file – within the js file?
Is it possible for a js function to figure out the file path of its code ? At runtime. Ex. <html><head><script src=”/js/version-3.2.1/myfile.js” /><head>…</html> /js/version-3.2.1/myfile.js Answer You can use document.currentScript: The Document.currentScript pr…
Save ID in variable and add style to it
I want to highlight randomly a word which is inside a <p> tag with the id=JShighlight. It should blink one time and then another randomly chosen word should blink.** I can’t add the css style needed to the ID. The words are nested in a span with an unique id like id=”one” oder id=̶…
Get native HTML element in Cypress
How do I get an underlying native HTMLElement (or Element or Node…) from a Cypress query? I would like to access the native HTMLElement instance in el. I have tried el[0] but the result is of type any. Answer In cypress, first() is a command that will be chained to .get() and retry for that whole select…
the purpose of this code is to add an article at the end of the page, but the broblem is that appear then it desappear
the purpose of this code is to add an article at the end of the page, but the broblem is that appear then it desappear.please help me to figur it out 🙂 Answer This is because you are using a form without preventing the submit of it. There is no need for the form here, and by default it will
querySelectorAll for element contain specific class
I have few divs that contain two classes such as this: where {{month.year + ‘-‘ + month.monthName + ‘-‘ + ‘end’}} for a certain month is 2018-August-end I want to select the divs that contain only 2018-August-end which I store into a variable so I tried something like this …