javascript 未捕获的类型错误：无法使用“in”运算符在未定义中搜索“scrollLeft”
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Uncaught TypeError: Cannot use 'in' operator to search for 'scrollLeft' in undefined
提问by AKG
According to the jQuery API Documentationand some examples found here, scrollLeft is a valid argument for animate(). However, I keep getting this error Uncaught TypeError: Cannot use 'in' operator to search for 'scrollLeft' in undefined.
根据jQuery API 文档和此处找到的一些示例，scrollLeft 是animate(). 但是，我不断收到此错误Uncaught TypeError: Cannot use 'in' operator to search for 'scrollLeft' in undefined。
$('#prev a, #next a').click(function() {
$(window).animate({scrollLeft: 500}, 1000);
});
Is there something simple and silly that I am overlooking? What am I doing wrong? Thanks :)
我忽略了一些简单而愚蠢的事情吗？我究竟做错了什么？谢谢 ：）
回答by adeneo
The window doesn't have a scrollbar, it belongs to the body or the documentElement (html tag) :
窗口没有滚动条，它属于正文或文档元素（html 标签）：
$('#prev a, #next a').click(function() {
$('body, html').animate({scrollLeft: 500}, 1000);
});
Strange as it may seem you can get the windows scrollLeft property with css(), but when animating, you animate the body and html tags.
看起来很奇怪，您可以使用 来获取 windows scrollLeft 属性css()，但是在设置动画时，您会为 body 和 html 标签设置动画。
