javascript - how to execute a jquery plugin in specific part of page by scrolling? -

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i need code execute jquery plugin in specific part of page: example in middle of page there div tag id test , in div plugin exist someting ,now wanna when page loaded nothing happen plugin when user start scroll down page , see div id test plugin start work ! there idea me? thanks

this seems want:

http://ahmadassaf.com/blog/web-development/scripts-plugins/attaching-javascript-listeners-page-scroll-plugins-hints/

just google "jquery scroll listener" find more plugins


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