How to use cdata tags

Methods for using cdata tags: 1. The CDATA part cannot contain the string "]]>", and nested CDATA parts are not allowed; 2. "]]>" that marks the end of the CDATA part cannot Contains spaces or line breaks.

Methods used with cdata tags:

CDATA

The term CDATA refers to the Text data parsed by the XML parser (Unparsed Character Data).

In XML elements, "<" and "&" are illegal.

"<" will generate an error because the parser will interpret this character as the beginning of a new element.

"&" will also generate an error because the parser will interpret this character as the beginning of a character entity.

Some text, such as JavaScript code, contains a large number of "<" or "&" characters. To avoid errors, the script code can be defined as CDATA.

Everything within the CDATA section will be ignored by the parser.

The CDATA part starts with "":

<script>
<![CDATA[
function matchwo(a,b)
{
if (a < b && a < 0) then
  {
  return 1;
  }
else
  {
  return 0;
  }
}
]]>
</script>

In the above example, the parser will Ignore everything in the CDATA section.

Notes on the CDATA part:

• The CDATA part cannot contain the string "]]>". Nested CDATA sections are also not allowed.

• The "]]>" marking the end of the CDATA section cannot contain spaces or line breaks.

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