isFunction() always false in jQuery

Question

so I'm using qtip for a super simple tool tip implementation.

I'm not including qtip on every page, only the pages that needed, so I'm trying to check for qtip's existence before calling it.

 /*
  * Tool Tip
  * inits qtip on any link with class="tt"
  */
  if( $.isFunction( $.qtip ) ){
  $(".tt").qtip();
  }

I've no idea what this isn't working. it's always returning false. Any ideas? Thx.

Answer 1

IMO, you should check

if($.isFunction($.fn.qtip))

Answer 2

try this:

if( $.isFunction( $.fn.qtip ) ){
    $(".tt").qtip();
}

as plugins reside in the $.fn object