javascript - Uncaught reference error: slider is not defined -

i'm trying implement joss benner's fix shown here. need implement code:

slider.setopts = function(opts) {   (var opt in opts) {     vars[opt] = opts[opt];   }   slider.setup(); }  slider.getopts = function() {   return vars; } 

i've tried fiddle here,

uncaught referenceerror: slider not defined  

in console. not i'm doing. other commenters seem able implement no problem.

could explain meaning behind code... slider? class? function? should place above code add .setopts function?

he wrote

i added these public methods flexslider

to so, have add lines of code inside jquery.flexslider.js-file , not in js-file did in fiddle. error tells problem is. , in case, slider in fact not defined, because slider-variable being declared inside codeblock of jquery.flexslider.js means, there no reference variable outside of block.

the public methods start in line 426, add code there.