HTMLIFrameElement.TextContent

Read and write.Type: String.
HTML node text content.
Contains text value of the node and all its descendants. The value does not contain markup.
Spaces are not normalized in any way. The returned string does not contain space characters in the element content (see the IsElementContentWhitespace property).
The principle of generating the node's text value:
For Element, Attribute, DocumentFragment - the union of text values of all the child nodes except for Comment. An empty string if there is no child nodes;
for Text, Comment - the value of NodeValue property;
for Document and DocumentType - Undefined.
Thin client, server, thick client, external connection, Mobile application (client), Mobile application (server).

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