How to use jquery to create progress bar for loadi

问题:

I want to take size in bytes of image in page at the first load page, and then create a loading bar and show it loading similar preloader of flash. But I don't know if jQuery can take size in bytes of image or not.

回答1:

I think all of these answers require something server-side to determine the file-size (please correct me if I'm wrong), but it would probably be best to preload the size from server-size or do an AJAX request to determine the file-size, but the latter seems counter productive.