HtmlElementProperty class

One settable property on an HtmlElement --- returned by HtmlElementProperties.Item. Carries the property's Value plus a Properties accessor that lets the addin drill into nested DOM property structures (.style.color, .chart.data.datasets(0).borderWidth, …).

Almost always written in shorthand --- neither HtmlElementProperty nor its parent HtmlElementProperties is typically named in addin code; the compiler resolves chains like .style.color = "red" through their default-members:

element.style.color = "red"
'   ↑ HtmlElement.Properties      (HtmlElement's DefaultMember)
'     .Item("style")               (HtmlElementProperties' DefaultMember)
'           .Properties            (HtmlElementProperty.Properties — nested bag)
'           .Item("color")         (the same DefaultMember chain again)
'                 .Value = "red"   (HtmlElementProperty.Value, the leaf)

Properties

Properties

A nested HtmlElementProperties for properties that themselves have sub-properties (the canonical example is style, whose sub-properties are the individual CSS-style names). Read-only at the accessor level; the inner bag is mutable.

Syntax: property.Properties As HtmlElementProperties

Value

The property's value. Read returns the current value as a Variant; assigning writes the new value back. DefaultMember --- so propertyObj = "red" is equivalent to propertyObj.Value = "red".

Syntax: property [ = value ]

The interface is [COMExtensible(True)] --- see Dynamic DOM property resolution on the package overview. Property names that route through Properties are resolved against the live DOM at run time, not declared statically.