On 5/26/11 11:56 AM, Nicholas Zakas wrote:
Sorry for repetition, but we can already preload images and CSS and apply them
to the page at an arbitrary point in time. Why wouldn't we want the same thing
for JavaScript?
I think the question is whether you want _more_ than that for JavaScript.
For images, you can preload them and choose when they're shown, but
_cannot_ choose when they're decoded.
For CSS, you can preload it and choose when it's applied but _cannot_
generally choose when it's parsed.
For JS, you want to be able to preload it and control when it's executed
(in the sense that the side-effects it causes become visible). The
question is whether control is also needed over exactly when
side-effect-free preprocessing of the script happens.
-Boris
