JSF - h:inputHidden

JSF Tag

<h:inputHidden value="Hello World" id="hiddenField" />

Rendered Output

<input id="jsfForm:hiddenField" type="hidden" name="jsfForm:hiddenField" 
   value="Hello World" />

Tag Attributes

S.N.	Attribute & Description
1	id Identifier for a component
2	binding Reference to the component that can be used in a backing bean
5	value A component’s value, typically a value binding
6	valueChangeListener A method binding to a method that responds to value changes
7	converter Converter class name
11	accept Comma-separated list of content types for a form
12	accept-charset Comma- or space-separated list of character encodings for a form. The accept-charset attribute is specified with the JSF HTML attribute named acceptcharset.
14	border Pixel value for an element’s border width
44	immediate Process validation early in the life cycle

Example Application

Let us create a test JSF application to test the above tag.

Step	Description
1	Create a project with a name helloworld under a package com.tutorialspoint.test as explained in the JSF - First Application chapter.
2	Modify home.xhtml as explained below. Keep rest of the files unchanged.
3	Compile and run the application to make sure business logic is working as per the requirements.
4	Finally, build the application in the form of war file and deploy it in Apache Tomcat Webserver.
5	Launch your web application using appropriate URL as explained below in the last step.

home.xhtml

<!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">
<head>
   <title>JSF Tutorial!</title>
   <h:head>
      <script type="text/javascript">
         function showHiddenValue(){ 
            alert(document.getElementById('jsfForm:hiddenField').value);	 
         }
      </script>
   </h:head>
</head>
<body>
<h2>h:inputHidden example</h2>
<hr />
   <h:form id="jsfForm">
   <h3>Get value from inputHidden field</h3>
   <h:inputHidden value="Hello World" id="hiddenField" />
   <h:commandButton value="Show Hidden Value" onclick="showHiddenValue()" />
   </h:form> 
</body>
</html>

Once you are ready with all the changes done, let us compile and run the application as we did in JSF - Create Application chapter. If everything is fine with your application, this will produce following result:

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