scrollTop doesn't work on firefox and IE? [duplicate]

Question

I have below code which works fine in chrome.

However, it does not work on firefox and also IE. Nothing happens.

 $("body").animate({scrollTop:$(this).offset().top},800);

So may i ask what i should write for firefox and IE??

Thanks.

Answer 1

try using

$('body,html').animate({scrollTop:$(this).offset().top},800);

instead of

$("body").animate({scrollTop:$(this).offset().top},800);

Answer 2

try this.

document.getElementsByTagName('body')[0].clientHeight