182695 2018-02-12 08:51:34 -0800 Use child text content when determining whether to bail early in running a script 2020-05-25 07:48:19 -0700 1 1 1 Unclassified WebKit WebCore JavaScript Safari Technology Preview Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 d rbuis cdumez esprehn+autocc ews-watchlist kangil.han rbuis webkit-bug-importer youennf ysuzuki oldest_to_newest 1398356 0 d 2018-02-12 08:51:34 -0800 Test: http://w3c-test.org/html/semantics/scripting-1/the-script-element/emptyish-script-elements.html Spec: https://html.spec.whatwg.org/#prepare-a-script step 5 Recent spec change: https://github.com/whatwg/html/pull/3451 (to match Firefox and Edge and be simpler) The observable difference here is due to whether or not you mark the script as "already-started", preventing future executions when its child text content changes. 1655331 1 400052 rbuis 2020-05-22 08:47:12 -0700 Created attachment 400052 Patch 1655799 2 400052 youennf 2020-05-25 01:00:22 -0700 Comment on attachment 400052 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=400052&action=review > Source/WebCore/dom/ScriptElement.cpp:184 > + const String& sourceText = scriptContent(); s/const String&/auto, scriptContent() is returning a String. If we need to optimise this a bit, maybe we should add a TextNodeTraversal::isEmpty routine so that we create the string only when executing the script. 1655823 3 400193 rbuis 2020-05-25 04:28:18 -0700 Created attachment 400193 Patch 1655855 4 400052 rbuis 2020-05-25 07:42:06 -0700 Comment on attachment 400052 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=400052&action=review >> Source/WebCore/dom/ScriptElement.cpp:184 >> + const String& sourceText = scriptContent(); > > s/const String&/auto, scriptContent() is returning a String. > If we need to optimise this a bit, maybe we should add a TextNodeTraversal::isEmpty routine so that we create the string only when executing the script. Done. I think it is okay since the majority of the time the script should have non empty content. Also I checked chromium code and they also just get the contents and then test for empty. 1655857 5 ews-feeder 2020-05-25 07:47:56 -0700 Committed r262125: <https://trac.webkit.org/changeset/262125> All reviewed patches have been landed. Closing bug and clearing flags on attachment 400193. 1655858 6 webkit-bug-importer 2020-05-25 07:48:19 -0700 <rdar://problem/63597671> 400052 2020-05-22 08:47:12 -0700 2020-05-25 04:28:13 -0700 Patch bug-182695-20200522174711.patch text/plain 5519 rbuis U3VidmVyc2lvbiBSZXZpc2lvbjogMjYyMDU3CmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggZGZkM2ViZjM4ZDk1ZDdj MGE2NDM2Y2FhYWZmZjcyMGRlNmMwZjYwZi4uNWZjNDhmZGMwMTNmMWY1ZGNkOWQ5ZjY3ZjI1MGFm ZGJlMWZmZmVjNCAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDIyIEBACisyMDIwLTA1LTIyICBSb2Ig QnVpcyAgPHJidWlzQGlnYWxpYS5jb20+CisKKyAgICAgICAgVXNlIGNoaWxkIHRleHQgY29udGVu dCB3aGVuIGRldGVybWluaW5nIHdoZXRoZXIgdG8gYmFpbCBlYXJseSBpbiBydW5uaW5nIGEgc2Ny aXB0CisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD0xODI2 OTUKKworICAgICAgICBSZXZpZXdlZCBieSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAgICBDaGVj 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