不幸的是,没有直接的方法来说明这一点.
我想说,如果你能让你的应用程序不依赖于这种流量,那就go 吧.
如果不是,我能想到的workaround个方法是跟踪用户启动的滚动,并判断滚动是由浏览器还是用户触发的.
这里有一个例子,我把它放在一起做得很好(除了jQuery历史有问题的浏览器).
You need to run this locally to be able to test it fully (jsFiddle/jsbin are not good fits as they iFrame the contents).
Here's the test cases that I validated:
- Page loads -
userScroll
is false
- 使用鼠标/键盘滚动-
userScroll
变为true
- Click on the link to jump to page bottom -
userScroll
becomes false
- 单击后退/前进-
userScroll
变为false
;
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<script src="http://code.jquery.com/jquery-1.6.1.min.js"></script>
<script type="text/javascript" src="https://raw.github.com/tkyk/jquery-history-plugin/master/jquery.history.js"></script>
</head>
<body>
<span> hello there </span><br/>
<a href="#bottom"> click here to go down </a>
<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
<a name="bottom"> just sitting </a>
</body>
<script type="text/javascript">
var userScroll = false;
function mouseEvent(e) {
userScroll = true;
}
$(function() {
// reset flag on back/forward
$.history.init(function(hash){
userScroll = false;
});
$(document).keydown(function(e) {
if(e.which == 33 // page up
|| e.which == 34 // page dn
|| e.which == 32 // spacebar
|| e.which == 38 // up
|| e.which == 40 // down
|| (e.ctrlKey && e.which == 36) // ctrl + home
|| (e.ctrlKey && e.which == 35) // ctrl + end
) {
userScroll = true;
}
});
// detect user scroll through mouse
// Mozilla/Webkit
if(window.addEventListener) {
document.addEventListener('DOMMouseScroll', mouseEvent, false);
}
//for IE/OPERA etc
document.onmousewheel = mouseEvent;
// to reset flag when named anchors are clicked
$('a[href*=#]').click(function() {
userScroll = false;
});
// detect browser/user scroll
$(document).scroll( function(){
console.log('Scroll initiated by ' + (userScroll == true ? "user" : "browser"));
});
});
</script>
</html>
Notes:
- This doesn't track scrolling when the user drags the scrollbar with mouse. This can be added with some more code, which I left as an exercise for you.
event.keyCodes
可能会因操作系统而异,因此您可能需要对其进行适当更改.
Hope this helps!