element.typeahead is not a function

[vikastyagisdd]

Hello
i am using typeahead script in my we project and it working fine but when i use the same js files in mobile then i got the error "element.typeahead is not a function ".
i have checked that all the js files are loaded properly on the browser.
i am using typeahead with angularjs.
same js files are working on web view but not working on mobile.
is there any other typeahead js library for mobile ?
Thanks in advance.