XForms Data Types
The XForms model supports XML Schema data types.
XML Schema Data Types
The XForms model supports XML Schema data types. This feature allows the
XForms processor to check the data for correct input values.
You can learn more about XML Schema in our XML
Schema tutorial.
To use XML Schema data types, you must add the XML Schema namespaces to your
namespace declaration like this:
<html
xmlns:xf="http://www.w3.org/2002/xforms"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
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After adding the XML Schema namespaces, you can add type attributes to your
XForms instance elements like this:
<xf:instance>
<person xmlns="">
<fname xsi:type="xsd:string"/>
<lname xsi:type="xsd:string"/>
<born xsi:type="xsd:date"/>
<size xsi:type="xsd:integer"/>
</person>
</xf:instance>
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XForms supports all XML Schema data types except for the following:
- duration
- ENTITY
- ENTITIES
- NOTATION
For a complete reference to XForms data types:
Complete XForms Data Type Reference
Try it yourself
Binding Datatypes
In XForms you can also use the <bind> element to associate data types with
instance data:
<xf:bind nodeset="/person/size" type="xsd:integer"/>
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