The substring() function
Smartsite 7.4 - ...
The substring() XPath 2.0 function returns the portion of the value sourcestring beginning at the position indicated by the value of start (1-based) and continuing for the number of characters indicated by the value of length. When length is omitted, the remainder of the string, beginning at the specified start position, is returned.
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string fn:substring(sourcestring, double start, double length) string fn:substring(sourcestring, double start) |
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Parameters:
- sourcestring: a node reference or string literal.
- start: the start position.
- length: the length (optional).
Example
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<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:xf="http://www.w3.org/2002/xforms"
xmlns:exf="http://smartsite.nl/namespaces/xforms/1.0"
xmlns:fn="http://www.w3.org/2005/xpath-functions">
<head>
<title>Example</title>
<xf:model>
<xf:instance>
<data xmlns="">
<tekst>www.formulierenserver.nl</tekst>
</data>
</xf:instance>
</xf:model>
</head>
<body>
<xf:group>
<xf:output value="fn:substring('motor-car', 7)" />
<xf:output value="fn:substring('metadata', 5, 4)" />
<xf:output value="fn:substring(tekst, 5)" />
</xf:group>
</body>
</html>
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The result will be:
car
data
formulierenserver.nl
formulierenserver.nl
data
formulierenserver.nl
formulierenserver.nl
Namespace
This function is available within the XPath 2.0 namespace (http://www.w3.org/2005/xpath-functions).