XForms Properties
XForms Properties
XForms uses properties to define data restrictions, types and behaviors.
Examples
A required="true()" property means that the input field is
required (cannot be empty on submit).
A type="decimal" property will only allow a decimal value to be submitted.
A calculate property can calculate a value.
Bind Properties to Data
XForms uses the bind element to bind XForms properties to XForms data:
<model>
<instance>
<person>
<fname/>
<lname/>
</person>
</instance>
<bind nodeset="person/lname" required="true()"/>
</model> |
In the example above, the <bind nodeset="person/lname"
required="true()"> specifies that the lname input field is required
(cannot be empty on submit).
XForms Properties Reference
| Name |
Description |
| calculate |
Defines a calculation to be performed on the item |
| constraint |
Defines a constraint for the item |
| p3ptype |
Defines a P3P data type for the item |
| readonly |
Defines an edit restriction for the item (cannot be
changed) |
| relevant |
Defines how relevant the data is (for display or
submission) |
| required |
Defines that a data item is required (cannot be blank) |
| type |
Defines the data type for the item |
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