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.
来源：https://stackoverflow.com/questions/3098489/how-to-use-jquery-to-create-progress-bar-for-loading-an-image