The navigation (hamburger) on mobile doesn't work (works on desktop)

Technical Q&A

Topic summary

A developer is troubleshooting a non-functional hamburger navigation menu on mobile devices for powerhouselithium.com, while it works correctly on desktop.

Technical Details:

  • Using the Venture theme
  • Console shows error: Uncaught TypeError: $.throttle is not a function at theme.js:2354
  • Multiple jQuery Migrate versions detected (3.1.0 and 1.4.1)
  • The problematic line appears to be: $.cache.window.on('scroll.stickynav', $.throttle(15, stickyHeaderOnScroll))

Current Status:

  • Initial diagnosis suggests the throttle function line may be causing issues
  • Developer posted additional error stack trace showing failures in vendor.js and theme.js
  • Resolution: The issue appears to have been resolved (user’s final post indicates they “figured it out”)

The root cause was likely a missing or incompatible jQuery throttle/debounce plugin dependency.

Summarized with AI on November 14. AI used: claude-sonnet-4-5-20250929.
1

https://powerhouselithium.com/

If anyone could help, you’d be a lifesaver.

The hamburger menu is not opening on mobile and I’m not sure what the issue is.

I used Google to inspect the page and is shows that this line is causing issues (although it could totally be something else).

cache.$window.on(‘scroll.stickynav’, $.throttle(15, stickyHeaderOnScroll));

I’m using the Venture theme.

Thanks in advance

2

Here is additional code…

storeifyapps-formbuilder-script.js?v=28450164374491247021691802447:1 JQMIGRATE: Migrate is installed, version 3.1.0

jquery-migrate-1.4.1.min.js:2 JQMIGRATE: Migrate is installed, version 1.4.1
theme.js:2354 Uncaught TypeError: $.throttle is not a function
at Object.init (theme.js:2354:44)
at new Header (theme.js:2661:24)
at theme.Sections._createInstance (theme.js:30:31)
at theme.Sections. (theme.js:109:14)
at Function.each (jquery-2.2.4.js:365:19)
at a.fn.init.each (jquery-2.2.4.js:137:17)
at theme.Sections.register (theme.js:107:43)
at theme.init (theme.js:3840:12)
at c (vendor.js?v=59352919779726365461691802447:14:6580)
at Object.fireWith [as resolveWith] (vendor.js?v=59352919779726365461691802447:14:7348)

Any help would be amazing and appreciated.

3

I kinda figured it out.