Bug 58636 – Mime type of javascript should be application/javascript

• Component: WebKit Misc.
• Status: UNCONFIRMED

[Hao Zheng]

According to rfc4329, http://tools.ietf.org/html/rfc4329#page-10, javascript should have mime-type 'application/javascript' instead of 'application/x-javascript'. But currently, it seems we all use the latter one. grep the Source dir:

Source/WebKit/qt/tests/qwebpage/tst_qwebpage.cpp:    { "js", "application/x-javascript" },
Source/WebCore/loader/cache/CachedScript.cpp:    // and refuse to serve them if we only accept application/x-javascript.
Source/WebCore/platform/brew/MIMETypeRegistryBrew.cpp:    { "js", "application/x-javascript" },
Source/WebCore/platform/MIMETypeRegistry.cpp:        Mozilla 1.8 accepts application/javascript, application/ecmascript, and application/x-javascript, but WinIE 7 doesn't.
Source/WebCore/platform/MIMETypeRegistry.cpp:        "application/x-javascript",
Source/WebCore/platform/wince/MIMETypeRegistryWinCE.cpp:        mimetypeMap.add("js", "application/x-javascript");
Source/WebCore/platform/efl/MIMETypeRegistryEfl.cpp:    { "js", "application/x-javascript" },
Source/WebCore/platform/gtk/MIMETypeRegistryGtk.cpp:    { "js", "application/x-javascript" },
Source/WebCore/platform/wx/MimeTypeRegistryWx.cpp:    { "js", "application/x-javascript" },
Source/WebCore/platform/haiku/MIMETypeRegistryHaiku.cpp:    { "js", "application/x-javascript" },
Source/WebCore/platform/qt/MIMETypeRegistryQt.cpp:    { "js", "application/x-javascript" },
Source/WebCore/platform/win/MIMETypeRegistryWin.cpp:        mimetypeMap.add("js", "application/x-javascript");
Source/WebKit/chromium/webkit/glue/mimetype_unittest.cc:    "application/x-javascript",
Source/WebKit/chromium/net/base/mime_util.cc:  { "application/x-javascript", "js" },
Source/WebKit/chromium/net/base/mime_util.cc:// application/x-javascript, but WinIE 7 doesn't.
Source/WebKit/chromium/net/base/mime_util.cc:  "application/x-javascript",
Source/WebKit/chromium/net/proxy/proxy_script_fetcher_impl.cc:    "application/x-javascript-config",
Source/WebKit/chromium/third_party/mongoose/mongoose.c:  {".js",   3,  "application/x-javascript", 24},

And layout test fast/preloader/scan-body-from-head-script.html can comfirm this. It seems only chromium-linux has rebaselined this.

LayoutTests/platform/chromium-linux/fast/preloader/script-expected.txt:script1.js has MIME type application/javascript
LayoutTests/platform/chromium-linux/fast/preloader/scan-body-from-head-script-expected.txt:script1.js has MIME type application/javascript

[Ahmad Saleem]

Only references:

https://searchfox.org/wubkat/rev/c67bb750f2c1083399f0dbe7d08b416cd45eee34/Source/WebCore/platform/MIMETypeRegistry.cpp#181

Which is coming from: https://mimesniff.spec.whatwg.org/#javascript-mime-type

Two more for platform specific MIME:

https://searchfox.org/wubkat/rev/c67bb750f2c1083399f0dbe7d08b416cd45eee34/Source/WebCore/platform/playstation/MIMETypeRegistryPlayStation.cpp#42

and

https://searchfox.org/wubkat/rev/c67bb750f2c1083399f0dbe7d08b416cd45eee34/Source/WebCore/platform/win/MIMETypeRegistryWin.cpp#85

___

Rest is in API Test. Although we do have few Layout Tests using this.

@Anne - anything to do here or we can mark this as 'RESOLVED CONFIGURATION CHANGED'.

[Anne van Kesteren]

Platforms might want to map .js to text/javascript these days.