Hi Rak,
As stated in the help article
HtmlTextBox - XHTML Validation you need to provide a valid XHTML for the value of our
HtmlTextBox item. What does not comply with this rule in your code is the attribute
lang=EN-AU where the value of the attribute is not surrounded in quotation marks. This is the cause of the error you receive:
'EN-AU' is an unexpected token. The expected token is '"' or '''. Line 1, position 228.
The function
StripHtmlTags is a built-in function, part of our expression engine, which strips all html tags from its string argument, returning the plain text, the text nodes extracted from the given html.
For example the expresion:
=StripHtmlTags("Hi <b>John</b>")
will result in the plain text:
Hi John
Note that the function may be only used as part of an expression, not in your compiled code.
More information and complete reference of all available built-in functions you may find in our help article
Developer Reference - Functions.
Kind regards,
Milen
the Telerik team