XSL: How to get javascript function return SELECT value in xsl

ojoker · May 23rd, 2011, 04:17 AM

Hope anyone can help that I'm struggling to fetch JS var into xsl variable for e.g

<?xml version='1.0'?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt" xmlns:user="http://mycompany.com/mynamespace">

<msxsl:script language="JavaScript" implements-prefix="js">
function getResult () {
var thisResult;
thisResult = "300";
return thisResult;
}
</msxsl:script>

<xsl:template match="/">

<xsl:variable name="JSattribute"><xsl:value-of select="js:getResult()"/></xsl:variable>

<xsl:variable name="XSLattribute">300</xsl:variable>

<xsl:choose>
<xsl:when test="string(number($JSattribute),string(number($X SLattribute))">
testAttribute is a match number
</xsl:when>
</xsl:choose>

</xsl:template>

</xsl:stylesheet>

------------

Hope anyone can help? I've tired to test many different ways to fix this error code and unable to show "testAttribute is a match number" web page all day today.

Thank you very much and look forward to read any of you crack this code?

Cheers
Oliver

Martin Honnen · May 23rd, 2011, 06:20 AM

What is it exactly that you want to achieve with

Code:

<xsl:when test="string(number($JSattribute),string(number($X  SLattribute))">

? I don't understand that snippet.
As for using Javascript extension functions with msxsl: script, that is not supported by all XSLT processors. Microsoft XSLT processors like MSXML support it, an maybe some others on Window trying to be compatible with Microsoft.
One issue I see with your XSLT code is that you have
implements-prefix="js"
yet you don't declare a namespace with that prefix. You need to do that with e.g.

Code:

xmlns:js="http://example.com/myfunctions"

ojoker · May 23rd, 2011, 06:44 AM

Hi Martin,

Thank you for reply which much appericate it. Sorry to confuse you. Java variable is from other data store portlet script:

1st portlet:
----------
<script type="text/javascript">
var membershipID = <xsl:value-of select="metadata/item/Membershipnumber" disable-output-escaping="yes" />;
</script>
---------

Which it will be put in this getResult () function var thisResult = "300"; e.g:

2nd portlet:
-----------

This $membershipID will be in xsl code to match other var number:

function getResult () {
var thisResult;
thisResult = $membershipID;
return thisResult;
}

* XSLattribute number for file id list

I only want to fix how to match right vraible number: JSattribute = XSLattribute.

here is renew code below include your quote "xmlns:js="http://example.com/myfunctions" that no luck.

Hope you can help me this out?

Thank you
Oliver..

---------------------------------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt" xmlns:user="http://mycompany.com/mynamespace">
<xsl:output method="html" encoding="utf-8"/>


<xsl:param name="context_path"/>
<xsl:param name="current_path"/>

<msxsl:script language="JavaScript" xmlns:js="http://example.com/myfunctions">
function getResult () {
var thisResult;
thisResult = $membershipID;
return thisResult;
}
</msxsl:script>

<xsl:template match="/">

<xsl:variable name="JSattribute"><xsl:value-of select="js:getResult()"/></xsl:variable>

<xsl:variable name="XSLattribute">300</xsl:variable>

<xsl:choose>
<xsl:when test="string(number($JSattribute),string(number($X SLattribute))">
testAttribute is a match number
</xsl:when>
</xsl:choose>

</xsl:template>
</xsl:stylesheet>

Martin Honnen · May 23rd, 2011, 07:01 AM

I still don't understand what you want to achieve. Do you use IE or MSXML or any XSLT processor where msxsl: script is supported? Otherwise you won't get anything working with msxsl: script, the processor is simply going to ignore it.

And you need to understand that in IE both HTML and XSLT can use Javascript functions but the execution happens at different stages, XSLT is executed first and creates a HTML document in which then, when XSLT and its scripts are completely done, other script can be used. So don't expect any script in XSLT and HTML to interact.

ojoker · May 24th, 2011, 10:55 AM

Ok, here is simple example why two variable number wont be match:

---------------------------------------------
<xsl:variable name="JSattribute">
<script type="text/javascript">document.write('300');</script>
</xsl:variable>

* HTML JSattribute Output: 300 - <xsl:copy-of select="$JSattribute" />

<xsl:variable name="XSLattribute">
300
</xsl:variable>

* HTML XSLattribute Output: 300 - <xsl:copy-of select="$XSLattribute" />

<xsl:choose>
<xsl:when test="number($JSattribute),number($XSLattribute)">
testAttribute is a match number
</xsl:when>
</xsl:choose>

*HTML Output: NA
---------------------------------------------

How to make these two variable number to match inc JS script in $JSattribute variable?

Hope this make sense?

Thank you and much appreciate!
Oliver

mhkay · May 24th, 2011, 11:52 AM

The value of the XSL attribute is 300. The value of the JS attribute is an HTML

Code:

<script>

element node. For them to be equal, the HTML script element would need to be executed/evaluated while the transformation is still in progress.

It's like asking for the value 4 to be equal to the string "please add two and two".