[Webkit-unassigned] [Bug 51650] New: Implement HTML5 Suggestion to Pre-fetch Script URL's Upon SRC Assignment
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Mon Dec 27 11:36:35 PST 2010
https://bugs.webkit.org/show_bug.cgi?id=51650
Summary: Implement HTML5 Suggestion to Pre-fetch Script URL's
Upon SRC Assignment
Product: WebKit
Version: 528+ (Nightly build)
Platform: All
URL: http://digital-fulcrum.com/webperf/orderedexec/
OS/Version: All
Status: UNCONFIRMED
Severity: Normal
Priority: P2
Component: Page Loading
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: serverherder at gmail.com
Recent activity to support parallel-loading dependent scripts lead to nightly builds including support for setting `async=true` on script elements to insure they execute in the order in which they are inserted. WHile this solves the immediate use-case, this behavior is not in the specification. Moreover, this does not address teh use-case of pre-fetching scripts and defering their execution.
Step 12 of the HTML 5 "Running a script" section (http://www.w3.org/TR/html5/scripting-1.html#running-a-script) makes the following suggestion:
For performance reasons, user agents may start fetching the script as soon as the attribute is set, instead, in the hope that the element will be inserted into the document.
This behavior is entirely sufficient to support both pre-fetching and ordered execution. It is currently implemented in IE 4+.
--
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.
More information about the webkit-unassigned
mailing list