HtmlElementProperties class

The dynamic property bag on an HtmlElement. Reached through HtmlElement.Properties. Every CSS property, every DOM attribute, every custom-widget extension is accessed through this bag — and almost always written in shorthand because Properties is the DefaultMember of HtmlElement:

With element                          ' element.Properties is the default member
    .style.display    = "flex"        ' Properties.Item("style").Item("display").Value = "flex"
    .style.flexDirection = "column"
    .style.gap        = "10px"
    .innerText        = "Hello"
End With

The shorthand reads at run time as a chain of Item("name") lookups against the underlying DOM element — see Dynamic DOM property resolution on the package overview.

Important

This interface is [COMExtensible(True)]. Property names are resolved against the live DOM element at run time, not declared statically on the interface. The compiler does not validate names — a typo (.innerTxt = "..." instead of .innerText = "...") fails silently or throws at run time. The accepted set is every DOM property of the underlying tag, plus any custom-widget extensions; the reference does not enumerate it.

Default member

The interface’s DefaultMember is Item — so properties("style") is equivalent to properties.Item("style"). Chains of .style.color = "red" thus desugar to properties.Item("style").Item("color").Value = "red".

Properties

Item

Looks up a property by name. Returns an HtmlElementProperty, which carries the property’s value plus a nested Properties for further drill-down.

Syntax: properties( DomPropertyName ) As HtmlElementProperty

DomPropertyName

required The property name. String. Standard DOM property names, CSS-style property names (when looked up under style), or custom-widget property names — all forwarded to the IDE’s tool-window renderer.