dom-elements | Elements class

I am trying to click on a button within a shadow root with Wedriverio 7.1.1 in Javascript used with Appium. I read the documentation as well as I saw this thread but none of them helped me. Code is pretty simple to be understood but I don't understand why it's not working.

I am looking for a way to NOT reuse DOM elements within lit-html/lit-element (yes, I know, I'm turning off one of the prime features). The particular scenario is moving an existing system to lit-element/lit-html that at certain points embeds the trumbowyg WYSIWYG editor. This editor attaches itself to a

I feel like the live() directive in lit-html should be useful for this, but that guards against reuse based on a given attribute, and I want to prevent reuse even if all attributes are identical. Thanks!

I want to render many custom (svg) markers on my map. After my initial research I found a couple of approaches, but none of these seem to be applicable in my case. I'm using ionic/angular 5.0.0 and leaflet 1.7.1.

This is what I have:

I created a Symbol component in React to easily render HTML Symbols by name like euro will render €(€) or sum render ∑(∑).

Issue is that if I just render the HTML code I will see the code on the screen and not the symbol. So I had to use the dangerouslySetInnerHTML prop on a span element to render it as HTML:

I think this will be a pretty hard or even impossible question. I have some code here that is build around my scenario describet here.

I took that python code and translated it into lua code but then I spottet an error I made.

If the code is used for a list of ~10 weigths it will work fine but in my case I have lists with up to 60 weights. the code generates an array with all possible bitstrings of length n. and with n = 60 this array would be 2^60 large and that is way to much.

Is there any way to calculate this without generation such a large array? My final code will be in lua but if you know a solution in any other language it will be fine to, I can still translate it later.

python code:

I am working with Angular 9 / typescript. I want to disable some of the form elements under a certain condition. I found such a good example, where the author disables all elements. I edited his example. Everything is fine, but MAT-SELECT is not disabled and remains the only active element. Please tell me how to disable it?

Example from the article:

I have a page with a lot of vertical scrolling and thousands of DOM elements. For improving performance, I thought about setting display: none; to the content of the divs above and below the viewport, that is, the divs which are not visible (while keeping their heights, obviously):

In order to check if my idea makes any sense I searched SO and I found this question. According to the comments and to the accepted answer, the best strategy is do nothing, since display: none; triggers reflow and may have the opposite effect:

Setting display to none triggers reflow which is completely opposite of what you want if what you want is to avoid reflow. Not doing anything doesn't trigger reflow. Setting visibility to hidden will also not trigger reflow. However, not doing anything a much easier.

However, there is a recent answer (which unfortunately seems more like a comment or even a question) that claims that display: none; is the current strategy used by sites like Facebook, where the vertical scroll is almost infinite.

It's worth mentioning that, unlike OP's description in that question, each visible div in my site is interactive: the user can click, drag, and do other stuff with the div's contents (which, I believe, makes the browser repainting the page).

Given all these information, my question is: does display: none; applied to the divs above/below the viewport improve performance or does it worsen performance? Or maybe it has no effect?

I'm collecting multiple innerText-Properties from a website that repeats elements on it's page (24 university profiles with name, avg rating, number of programms and so on).

I tested my little program with one university using querySelector() to collect the 4-5 innerText that I wanted, brought them together using var u = await Promise.allSettled([arr1, arr2, arr3, arr4, arr5]) and used a constructor I defined at the top var currUniv = new University(...myArrayOfFacts). So far so good (at least the result...)

Since the page offers 24 university itmes at once / on one page (and all in the same structure), I now want to used querySelectorAll()to grab 5 arrays with 24 elements each in one go. If I stick to var u = await Promise.allSettled([arr1, arr2, arr3, arr4, arr5]) I end up with an array of 5 arrays and now don't know (and can't seem to find a way to successful google it) how I feed one element of each array at a time to my constructor.

Should I avoid stuffing everything in one large array in the first place? I do this because I think I need to await all Promises to resolve... Or at what point should I start looping over the arrays?

Everything is async. I shortend the code a bit: And like I wrote further up - that worked fine for one set of DOM-Elements / for one university.

Many thanks for any tips pointing me in the right direction!

I have a script which waits for specific DOM-Elements to be loaded and when loaded it appends another HTML-Element: