How do you read it in the web component afterwards? Passing it via property sounds quite useful.

Web components are implemented using custom elements which are just plain JS classes that extend the HTMLElement class, so you would access the property the same way you would access a property in a normal JS class.

The author of the thread is arguing against properties.

Yes, I know. I wasn't making a prescriptive comment about whether or not developers should use properties, I was just making a descriptive comment about how properties are accessed in a web component to answer the specific question politelemon asked.

Thanks understood, that makes it quite simple and intuitive thinking about it.

Event listeners? Image data?

element.srcObject is very useful for <video> elements when the srcObject is a direct stream feed from the camera. I don’t even know how I would go about passing that as a string attribute.

https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaEl...