Concatenate strings in JSF/JSP EL and Javascript [duplicate]

Answer 1

Assuming you are using Facelets, here's a relatively good solution:

• create functions.taglib.xml in your WEB-INF

• add a context param indicating the location:

  
      facelets.LIBRARIES
      
          /WEB-INF/functions.taglib.xml
      
  
  

• In the xml put the following:

  
  
  
      http://yournamespace.com/fnc
      
          concat
          com.yourpackage.utils.Functions
          
              java.lang.String concat(java.lang.String, java.lang.String)
          
      
  
  

• in the page use the following:

  xmlns:fnc="http://yournamespace.com/fnc"
  ....
  oncomplete="#{rich:component(fnc:concat(prefix, '_examinationPanel'))}.show();"
  

• finally, in the Function class define the simple method:

  public static String concat(String string1, String string2) {
     return string1.concat(string2);
  }