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Attention: This component is still under progress and experimental.
b:defaultAction The default action tag renders an HTML script element after component that contains default action tag. It is necessary to add an id to ambient form.
Tag attributes
component
click first buttonclick default buttonclick last button
Text value:-
Button value:- 
                            <!DOCTYPE html> 
<html xmlns="http://www.w3.org/1999/xhtml" 
      xmlns:h="http://xmlns.jcp.org/jsf/html" 
      xmlns:f="http://xmlns.jcp.org/jsf/core" 
      xmlns:b="http://butterfaces.org/components"> 
<h:head /> 
<body>
    <h:form id="formId">
        <b:text value="#{myBean.value}" />

        <b:commandLink id="input"
                       action="#{myBean.submit}"
                       value="click me"
                       styleClass="btn btn-primary">
            <f:ajax execute="@form" render="@form"/>
            <b:defaultAction rendered="true"/>
        </b:commandLink>
    </h:form> 
</body> 
</html>
                        
                            package org.butterfaces.defaultaction.demo;

@ViewScoped
@Named
public class MyBean implements Serializable {

    private String value;

    public void submit() {
        // implement me
    }

    // getter and setter

}