dioxus-mirror/docs/guide/src/en/__unused/attribute_spreading.md

In the cases where you need to pass arbitrary element properties into a component – say to add more functionality to the <a> tag, Dioxus will accept any quoted fields. This is similar to adding arbitrary fields to regular elements using quotes.

rsx!(
    Clickable {
        "class": "blue-button",
        "style": "background: red;"
    }
)

For a component to accept these attributes, you must add an attributes field to your component's properties. We can use the spread syntax to add these attributes to whatever nodes are in our component.

#[derive(Props)]
struct ClickableProps<'a> {
    attributes: Attributes<'a>
}

fn clickable(cx: Scope<ClickableProps<'a>>) -> Element {
    cx.render(rsx!(
        a {
            ..cx.props.attributes,
            "Any link, anywhere"
        }
    ))
}