No-Library (pure JS), HTML, CSS, JavaScript
Where the {some custom eventType}="{some code}" executes with the correct values in scope and the this binding set correctly.
No dependencies, minimal script
reportValidity gives a console.error when the Custom Element has no delegateFocus set
+ injection order for slots without a name/default slot
attachShadow({ mode:open, delegateFocus:true })
https://stackoverflow.com/questions/59431342/web-components-extend-native-elements-style#
One click event controls all button styling
Set related input fields with (product) data