when is image pulled from the server createElement

[polilop]

I am creating img elements on the fly (document.createElement('img)
so now i am interested when is the image being pulled from the server, is it
whe i start creating the elements or when i append the elements to the
document?

 

[Martin Honnen]

I am creating img elements on the fly (document.createElement('img)
so now i am interested when is the image being pulled from the server,
is it whe i start creating the elements or when i append the elements to
the document?

Well simply creating e.g.
var img = document.createElement('img');
can't pull anything from the server.
Whether setting
img.src = 'foo.png';
then (pre)loads the image depends on the implementation, you will have
to run a test.

 

[rf]

I am creating img elements on the fly (document.createElement('img)
so now i am interested when is the image being pulled from the server, is
it whe i start creating the elements or when i append the elements to the
document?

What happened when you stepped through your code with the debugger and
watched the net tab? Using firefox and firebug of course.

 

[polilop]

images ar loaded when src attribute is added, or when img element is
created.
Happens very fast as I first create img then add attribute in next line, but
it is not when appending to page.
conclusion: when img object created then the image is getting transferred
from server/image location