Encoding JavaScript

We can achieve this behavior by encoding the spinner with JavaScript.

• To avoid name conflicts, rather than writing a global JavaScript function, a local method (spin) of the text field object is used
• Similarly, min and max are added fields
• Encoding spin, min, and max on the fly requires access to the form ID (_id1 in this case).

  This can be obtained through a utility method:

  public static String getFormId(FacesContext context, UIComponent component) {
      UIComponent parent = component;
      while (!(parent instanceof UIForm)) parent = parent.getParent();
      return parent.getClientId(context);
  }