javascript - Ipad scroll reached bottom condition not met -

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i have requirement change footer if scroll reached bottom of page. used 

if($(window).scrolltop() + $(window).height() == $(document).height())

condition check whether scroll has reached bottom or not. condition not getting met in ipad, works on desktop.

is there different check find if scroll has reached bottom? how fix this?

this because of bug ios7. can check answer if helps ios 7 - css - html height - 100% = 692px


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