为啥我用 jQuery scrollTop()方法获取的滚动条高度都是 0 ？

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var scrollHeight=$(window).scrollTop();

window.onscroll=function(){
console.log(scrollHeight);
}

文档声明是<!DOCTYPE html>

scrollTop

DOCTYPE

var

5 replies • 2015-03-29 16:59:56 +08:00

booksmith

Mar 29, 2015

这是我已前遇到的

一开始我以为是这样的原因
> i think i find the anwser
> at win7 chrome33,
> $('body').scrollTop() will return correct value, and $('html').scrollTop() will return error value
> but at fedora20 chrome33 , $('body').scrollTop() will return 0 , and $('html').scrollTop() will return > > > correct value
>
> ps:
> at win7 chromium 35, chrome 35.0.1853.2 canary
> $('body').scrollTop() will return 0 , and $('html').scrollTop() will return correct value

后来再仔细找时，才发现是这个原因。

> It's my problem. my chrome use the features : Enable experimental Web Platform features at chrome://flags/ . And then your plugin doesnt work. when i disable it , everything is becoming ok.
> the chromium and canary default is enable this features , so they doesnt work too.

你自己看看是不是这个问题。

airyland

Mar 29, 2015

你进入页面就把值附给一个变量了，还能是其他值么?

window.onscroll=function(){
console.log($(window).scrollTop();
}

airyland

Mar 29, 2015

打太快，上面打少了一个括号。

click

Mar 29, 2015

@airyland 谢谢。明白了！

booksmith

Mar 29, 2015

~~！，我看得太大意，没注意楼主的写法...