HTML and CSS Reference
In-Depth Information
JavaScript Element
Description
MessageChannel
An object representing a pair of connected message ports
Properties
port1
The first message port
port2
The second message port
MessageEvent
A message received from another execution context
Properties
data
The message that is being delivered
lastEventId
The last event ID sent by the message server
origin
The origin URL of the message sender
ports
An array of
MessagePort
objects
source
The window from which the message was sent
MessagePort
A message port used to pass asynchronous messages
Methods
postMessage(
message
,[,
ports
])
Sends a clone of the specified
message
to an array of message
ports
start()
Causes the message port to start firing messages
Meter
A graphic meter or gauge in a Web form
Properties
form
The form element containing the meter
high
The values between min and high that should be graphically displayed as high
labels
An array of labels associated with the meter
low
The values between min and low that should be graphically displayed as low
max
The maximum value that can be displayed by the meter
min
The minimum value that can be displayed by the meter
optimum
The meter values considered to be optimum values
value
The value currently represented by the meter
navigatorƒ
An object representing the browser currently in use
Properties
appCodeName
The code name of the browser
appName
The name of the browser
appVersion
The version of the browser
cookieEnabled
A Boolean signifying whether persistent cookies are enabled
geolocation
The
Geolocation
object for the current browser
language
The language of the browser
mimeTypes
An array of the MIME types supported by the browser
onLine
A Boolean indicating if the browser is online; a value of false prevents the browser
from downloading anything from the network
oscpu
A string containing the operating system
platform
The platform on which the browser is running
plugins
An array of the plug-ins installed on the browser
userAgent
The user-agent text string sent from the client to the Web serve
