Brief Explanation of CDATA

The following code is often seen in the source code of the webpage:

<! [CDATA [other content]>. Other content is generally a script.

Why use this label?

This label indicates character-data, that is, character data.

Purpose: Tell the XML Parser not to parse this section. If the script in other content contains a <B, the <number is recognized as part of the XML tag. Because no> is found or the end mark of the symmetric pair, the XML parser will parse the error. Therefore, you need to tell the XML Parser not to parse this section.

 

PS: Likewise <! -- Other content --> is to tell the server to try the engine not to parse "other content", because they are comments

@ * Other content * @ is to tell the razor of MVC to try the engine not to parse "other content", because they are comments

And so on

The <> & symbol in the XML fragment is invalid.

There are 5 predefined entity references in XML:

& Lt;	<	Yu no.
& Gt;	>	Yu no.
& Amp;	&	And (and) No.
& Apos;	'	Single quotes
& Quot;	"	Double quotation marks

& Why is it invalid? Because the Escape Character of the <> number must be used &

Brief Explanation of CDATA