f:validateDoubleRange |
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The ValidateDoubleRange tag registers a DoubleRangeValidator instance on the
component associated with the enclosing tag. This tag can be used to validate
user input when the expected input is a floating-point value.
JSF Example
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html">
<body>
<f:view>
<h:inputText id="withdraw" value="#{accountBean.withdraw.amount}">
<f:validateDoubleRange minimum="20.00" maximum="1000.00" />
</h:inputText>
<h:message for="withdraw" />
</f:view>
</body>
</html>
This example was formatted by JSFToolbox for Dreamweaver.
When the form is submitted with the value 5 in the input field, the JSF framework will convert and validate the user input to determine if the value is between the minimum and maximum values defined by the validateDoubleRange tag. Since the input is not valid, the JSF framework creates a validation message that can be displayed using the h:message or h:messages tags.
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