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
