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我已经尝试了很多，但不能在每三个向下滚动后自动添加显示更多按钮。

当我要到页面底部时，它会无限次向下滚动。我必须在三个滚动后停止它，并希望在每三个滚动后添加“查看更多”按钮。

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1 回答 1

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尝试这样的事情：

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!DOCTYPE html>
<html>
<head>
<style>
body {
    width: 200px;
    height: 100px;
    overflow: scroll;
}
</style>
</head>
<body >

<p>Try the scrollbar in div.</p>

In my younger and more vulnerable years my father gave me some advice that I've been turning over in my mind ever since.
<br><br>
'Whenever you feel like criticizing anyone,' he told me, just remember that all the people in this world haven't had the advantages that you've had.'


<p>Try the scrollbar in div.</p>

In my younger and more vulnerable years my father gave me some advice that I've been turning over in my mind ever since.
<br><br>
'Whenever you feel like criticizing anyone,' he told me, just remember that all the people in this world haven't had the advantages that you've had.'



<p>Try the scrollbar in div.</p>

In my younger and more vulnerable years my father gave me some advice that I've been turning over in my mind ever since.
<br><br>
'Whenever you feel like criticizing anyone,' he told me, just remember that all the people in this world haven't had the advantages that you've had.'



<p>Try the scrollbar in div.</p>

In my younger and more vulnerable years my father gave me some advice that I've been turning over in my mind ever since.
<br><br>
'Whenever you feel like criticizing anyone,' he told me, just remember that all the people in this world haven't had the advantages that you've had.'

<p>Scrolled <span id="demo">0</span> times.</p>

<script>


var lastScrollTop = 0;
var x = 0;
$(window).scroll(function(event){
   var st = $(this).scrollTop();
   if (st > lastScrollTop){
	   document.getElementById("demo").innerHTML = x += 1;
	    if( x%3 == 0){
	    	var i=document.createElement('button');
	    	i.innerHTML="more";
	     document.getElementsByTagName('body')[0].appendChild(i);
	    }
   } 
   lastScrollTop = st;
});
</script>

</body>
</html>

于 2015-10-17T05:02:47.993 回答