jsonp()
      Adds a JSON-P script to the page to be executed once the script has been retrieved.
      
        This function is valid in
        v2.3.0 to v2.24.3.
        This function has been downloaded 67 times.
      
      
      
      
      Parameters
                        
            
              {string}
              url
                          
            URL of the JSON-P script without the callback parameter provided.
           
                  
            
              {Function}
              callback
                          
            Function to be called by the JSON-P script.
           
                  
            
              {string=}
              opt_callbackParamName
                              Optional, Default:"callback"
                          
            Name of the parameter that will be passed the callback function's name.
           
              
      Returns
      
        {HTMLScriptElement}
        The script element that is added to the page.
       
              Required Function
        This function directly requires the following function which is included automatically:
        
                      - 
              
has()
              Every object descended from Object inherits the hasOwnProperty method. This method can be used to determine whether an object has the specified property as a direct property of that object; unlike the in operator, this method does not check down the object's prototype chain.