jquery - How to properly utilize .scrollTop() -


could please let me know why not working?

   $(window).scroll(function(){       if($(window).scrolltop() > 100){         alert("scroll in y > 100px!");      }     });

i have tried quite few variations of code, none seem work.

can line 1 run alert function on own seems crash browser.
page linked jquery-1.9.1 , above code on external .js file , referenced.

relatively new jquery sorry if question elementary.
thank in advance!


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