On 2/13/12 1:39 AM, Gray Zhang wrote:
1. the @defer attribute on<img> and<iframe> 2. the similar @deferpolicy attribute with value a combination of visible, network-idle and render-idle 3. a global switch as a http header or an attribute on html to switch UAs image loading from "obtain images immediately" to "obtain on demand" or vice versa. 4. onscrollintoview/onscrolloutofview events 5. DOMVisibilityChanged event
#4 and #5 are conceptually no better than onscroll plus position calculations, right?
I prefer #1 and/or #2 to #3, because it gives the UA strictly more information to use in prioritizing the image loads....
-Boris