Why do I need to nest a component with rendered=”#{some}” in another component when I want to ajax-update it?

by

Ajax updating is performed by JavaScript language in the client side. All which JavaScript has access to is the HTML DOM tree. If JSF does not render any component to the HTML output, then there’s nothing in the HTML DOM tree which can be obtained by JavaScript upon Ajax update. JavaScript cannot get the desired element by its ID.

It will only work if you wrap the conditionally JSF-rendered component in another component which is always rendered to the HTML output and thus always present in the HTML DOM tree and thus always obtainable by JavaScript. Reference that wrapper component instead during ajax render/update.

See also:

More Related Contents:

  1. Ajax update/render does not work on a component which has rendered attribute
  2. JSTL in JSF2 Facelets… makes sense?
  3. JSF returns blank/unparsed page with plain/raw XHTML/XML/EL source instead of rendered HTML output
  4. How to include another XHTML in XHTML using JSF 2.0 Facelets?
  5. How to reference CSS / JS / image resource in Facelets template?
  6. How to ajax-refresh dynamic include content by navigation menu? (JSF SPA)
  7. Which XHTML files do I need to put in /WEB-INF and which not?
  8. Obtaining Facelets templates/files from an external filesystem or database
  9. Packaging Facelets files (templates, includes, composites) in a JAR
  10. How can I set id of a component/tag inside ui:repeat
  11. How to create a custom Facelets tag?
  12. Avoiding duplicate ids when reusing facelets compositions in the same naming container
  13. How to implement a dynamic list with a JSF 2.0 Composite Component?
  14. Error Parsing /page.xhtml: Error Traced[line: 42] The entity “nbsp” was referenced, but not declared
  15. Why is the getter called so many times by the rendered attribute?
  16. Does it matter whether place f:event inside f:metadata or not?
  17. Differences between action and actionListener
  18. How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throws an error / not usable
  19. How to create dynamic JSF form fields
  20. Difference between h:button and h:commandButton
  21. How implement a login filter in JSF?
  22. Localization in JSF, how to remember selected locale per session instead of per request/view
  23. Error parsing XHTML: The content of elements must consist of well-formed character data or markup
  24. How to update Mojarra version in GlassFish
  25. How to use Facelets composition with files from another context
  26. Changing JSF prefix to suffix mapping forces me to reapply the mapping on CSS background images
  27. Adding faces message to redirected page using ExternalContext.redirect()
  28. Reset input fields without executing validation
  29. h:commandButton not working inside h:dataTable
  30. JSF 2 dataTable row index without dataModel

Leave a Comment