html - jQuery animate scrollTop not working with Firefox -

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the following code skipping top in firefox, , works intended in chrome. i've read here on stackoverflow, firefox , ie need $('body,html') in order work, it's still not. in chrome, works perfectly. tips why it's not?

$('body,html').animate( { scrolltop: 0 }, // animating ) {     duration: 1000, // how fast animating     easing: 'easeinoutexpo', // type of easing });

removing event.preventdefault(); code solved issue.


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