My mobile menu just stopped working yesterday. This is a Multi-site install, and its only affecting one site. There has been no installs, no changes to the the site in a few weeks. There's no error reports, no logs to indicate any issues. How to fix a javascript or jQuery issue?


Page errors

The third error only shows after you try to open the mobile menu.

  • Most likely an issue between Prototype and jQuery. Make sure jQuery.noConflict() is called somewhere. Have you tried cleaning your cache? Commented May 18, 2016 at 14:40
  • Yes manually and via the admin. Am using magepsycho lightbox module, but see no conflict with it.
    – Qozmiq
    Commented May 18, 2016 at 17:05

1 Answer 1


If you use the tools provided by your browser to inspect content and see errors in console you'll find you have some javascript error specifically scripts.js:86 Uncaught TypeError: $(...).tooltip is not a function

  • I do see this now, thank you. Do you have any recommendation as to what to do about it? Update of jquery or javascript?
    – Qozmiq
    Commented May 18, 2016 at 13:49
  • first check that actually the function exists in the javascripts you have, if they do check the order they are added to your page so that are not called before being loaded. and this kind of error for sure you've changed something inside the code so i would check what change broke you code.
    – springerin
    Commented May 18, 2016 at 21:53

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