问题
what could be the reason if browser is showing progress bar (stuck at half) as if it is still trying to load something, even after the page is rendered. this is an intranet ASP.NET website. how can I find out the reason? the browser is IE8. actually this started after the browser is upgraded from IE6 to IE8. not sure if this issue has anything to do with browser upgrade. will the tools like Fiddler can help to find out what it is still trying to load? thanks in advance.
回答1:
Check if u have behavior attached to any control. It happens sometime due to behavior.
回答2:
Do you have any onload scripts that are using document.write() that don't call document.close() when they're done? This will cause the browser to wait, expecting more...
回答3:
Could be AJAX requests. Fiddler will help.
来源：https://stackoverflow.com/questions/2295879/browser-showing-half-progress-bar-even-after-page-is-fully-rendered