javascript

Chapter 8: The Browser Object Model
Property/Method Description IE Firefox
Safari/
Chrome
Opera
javaEnabled()
language
mimeTypes
onLine
opsProfile
oscpu
platform
plugins
preference()
product
productSub
register
ContentHandler()
registerProtocol
Handler()
securityPolicy
Indicates if Java is enabled in
the browser.
The browser ’ s primary
language.
Array of MIME types
registered with the browser.
Indicates if the browser is
connected to the Internet.
Apparently unused. No
documentation available.
The operating system and/or
CPU on which the browser is
running.
The system platform on
which the browser is running.
Array of plug - ins installed on
the browser. In IE only, this is
an array of all < embed>
elements on the page.
Sets a user preference.
Accessible only in privileged
mode.
The name of the product
(typically “ Gecko “ ).
Extra information about the
product (typically Gecko
version information).
Registers a web site as a
handler for a specific MIME
type.
Registers a web site as a
handler for a particular
protocol.
Deprecated. Name of the
security policy. Retained for
backwards compatibility with
Netscape Navigator 4.
4.0+ 1.0+ 1.0+ 7.0+
— 1.0+ 1.0+ 7.0+
4.0+ 1.0+ 1.0+ 7.0+
4.0+ 1.0+ — 9.5+
4.0+ — — —
— 1.0+ — —
4.0+ 1.0+ 1.0+ 7.0+
4.0+ 1.0+ 1.0+ 7.0+
— 1.5+ — —
— 1.0+ 1.0+ —
— 1.0+ 1.0+ —
— 2.0+ — —
— 2.0+ — —
— 1.0+ — —
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