References > " . "Element Reference"; $pagetitle="Observes"; $customsidebar = "elemref-sidebar.php"; include "header.php"; ?>

Observes

The observes element can be used to listen to a broadcaster and receive events and attributes from it. The observes element should be placed inside the element that wants to observe the broadcaster. When an observed attribute is modified on the broadcaster, the attribute's value will be forwarded and set on the parent element of the observer.

More information about observes

Attributes:

attribute element

Attributes:

Inherited from XUL Element:

align
allowevents
allownegativeassertions
class
coalesceduplicatearcs
collapsed
container
containment
context
contextmenu
datasources
debug
dir
empty
equalsize
flags
flex
height
hidden
id
insertafter
insertbefore
left
maxheight
maxwidth
menu
minheight
minwidth
observes
ordinal
orient
pack
persist
popup
position
ref
removeelement
sortDirection
sortResource
sortResource2
statustext
style
template
tooltip
tooltiptext
top
uri
wait-cursor
width

attribute

Type: attribute name

The attribute that the observer is observing. When the value of the attribute changes, the broadcast event is called on the observer. Use the value '*' to observe all attribute of the broadcasters. The id, ref and persist attributes are not observed.

element

Type: broadcaster element id

The id of the broadcaster element that the observer is observing.


Properties and Methods:

Inherited from XUL Element:

align allowEvents blur boxObject boxObject.element
boxObject.getLookAndFeelMetric boxObject.height boxObject.screenX boxObject.screenY boxObject.width
boxObject.x boxObject.y builder className click
collapsed contextMenu controllers database datasources
dir doCommand flex focus getElementsByAttribute
height hidden id left maxHeight
maxWidth menu minHeight minWidth observes
ordinal orient pack persist ref
resource statusText style tooltip tooltipText
top width

Inherited from Element:

addEventListener
appendChild
attributes
childNodes
cloneNode
dispatchEvent
firstChild
getAttribute
getAttributeNS
getAttributeNode
getAttributeNodeNS
getElementsByTagName
getElementsByTagNameNS
hasAttribute
hasAttributeNS
hasAttributes
hasChildNodes
insertBefore
isSupported
lastChild
localName
namespaceURI
nextSibling
nodeName
nodeType
nodeValue
normalize
ownerDocument
parentNode
prefix
previousSibling
removeAttribute
removeAttributeNS
removeAttributeNode
removeChild
removeEventListener
replaceChild
setAttribute
setAttributeNS
setAttributeNode
setAttributeNodeNS
tagName