jQuery 为什么对 scrollTop 使用 'html, body' 而不仅仅是 'html'
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why to use 'html, body' for scrollTop instead of just 'html'
提问by Hector Barbossa
I got a solution from stackoverflow to scroll to the top of the page like
我从 stackoverflow 得到了一个解决方案,可以滚动到页面顶部,例如
$('html, body').animate({scrollTop: $("#page").offset().top}, 2000);
But I am not sure why to use 'html, body' for scrollTop instead of just 'html' ?
但我不确定为什么要使用 'html, body' 来代替 scrollTop 而不仅仅是 'html' ?
回答by Niet the Dark Absol
Some browsers apply the "overall" scroll to document.documentElement
(the <html>
element) and others to document.body
(the <body>
element). For compatibility with both, you have to apply the scrolling to both.
一些浏览器将“整体”滚动应用于document.documentElement
(<html>
元素)而其他浏览器应用于document.body
(<body>
元素)。为了与两者兼容,您必须将滚动应用于两者。