domtokenlist | A super duper strict shim/polyfill for DOMTokenList | User Interface library

I have been stuck with my code to change a logo on scrolling using Vanilla JS (Without JQuery).

What I got from my devtool was this error:-

Uncaught DOMException: Failed to execute 'add' on 'DOMTokenList': The token provided ('[object HTMLImageElement]') contains HTML space characters, which are not valid in tokens.at {localhost}

Can anyone spot where I went wrong with my code?

I want to save the color of all my buttons in a Webpage in an array and change the color of my buttons. Later I want to be able to access that colors and turn it back again. This is my HTML code

I am trying to get the element id during scan barcode sku event, and get element according to data-sku in the li which added dynamically under UL which loads from another function on load of page.

I tried many ways as guided but it looks i am missing some thing due to which i am unable to get desired result, following what i am trying is the last looks more relative.

Data i have in UL added dynamically in another function on load

Hello everyone it looks like either I am using the hooks wrong or there's something wrong with my version of react.

I'm on "react": "16.13.1" and "styled-components": "^3.4.10"

I have the following code:

During the layout of the slider, there was a problem that I could not make one picture invisible and the other visible. The error shown by the debugger: DOMException: Failed to execute 'remove' on 'DOMTokenList': The token provided contains HTML space characters, which are not valid in tokens. I found the same problem on stackoverflow, but there the questioner actually had spaces in the class names:Javascript InvalidCharacterError when modifying a css name with a space I couldn't find any gaps in my code.

Code:

Trying to synchronize my highchart with my table. I have followed the steps this page https://www.highcharts.com/blog/tutorials/synchronize-selection-bi-directionally-between-chart-and-table/ and the github script below which is how they have done it: https://github.com/gvaartjes/highcharts-simple-sync-table/blob/master/script.js

For some reason my script is not working. It doesnt highlight the points based on the cell i click. The error I keep getting is:

...

Given is the following jQuery code which I try to remove and convert into standard JS code:

Right now anchor tag is working when i click on text, how can i make circle clickable too.

i tried to put tag outside of list tag but it's not working that way too,

What i want is whether i click on text (step1-step5) or circle it should open relevant link.

FIDDLE

I updated my Angular app from v6 to v9, and when testing it is really ok, but when I deploy it to my staging server, I have this error:

You must pass in a NgModule or NgModuleFactory to be bootstrapped

I have searched a lot about it, but I have no idea what could be done here.

./server.ts: