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Use the onlyonce JSP tag to
indicate that text within the body of the tag is to be included
in the stream processing output only the first time that an
onlyonce tag of that name is found.
This tag is primarily useful in complex HTML streams to prevent multiple definitions of JavaScript functions.
When entering
HTML source code directly into the HTML tab of a HTML Property rule (or similar
form), you can minimize the size of the resulting HTML document
with the <pega:onlyonce > and <pega:static > tags.
See Including only one copy of JavaScript code in
More
About HTML property rules.
For example, this tag is named Alpha.
<!-- define scripts -->
<pega:onlyonce name="Alpha" >
<b> The work object id is <pega:reference
name=".pyID">.
</pega:onlyonce >
During stream processing, if another onlyonce tag named Alpha appears, the body of the second (and later) tags are skipped over and not processed.
In the syntax presentations below:
<pega:onlyonce
name="name" >
HTML, XML or JavaScript code to process only once
</pega:onlyonce >
The name
attribute is required.
Attribute |
Description |
name
|
Set the name attribute to an arbitrary non-blank text
value. Case is significant. During stream processing,
second and later appearances of an
|