仿新浪博客滚动条后ajax加载评论
<html> <head> <title></title> <style type='text/css'> #one{ border:solid 1px green; /*width:300px; height:200px;*/ } </style> <script language='javascript'> function fun2() { var object=document.getElementById('one'); if(document.body.scrollTop+document.body.clientHeight>object.offsetHeight+30+(document.body.clientHeight/2)){ alert('hello world'); window.onscroll=null; } } window.onload=fun3; function fun3() { var object=document.getElementById('one') if(object.offsetHeight+30>document.body.clientHeight){ window.onscroll=fun2; } } </script> </head> <body> <div id='one'> <script language='javascript'> for(var i=0;i<100;i++) { document.write('3333<br/>'); } </script> </div> <script language='javascript'> for(var i=0;i<100;i++) { document.write('3333<br/>'); } </script> </body> </html>