Properties and methods for Dom and XMLHttpRequest objects, domxmlhttprequest_php tutorial

Properties and methods for Dom and XMLHttpRequest objects, domxmlhttprequest

Standard XMLHttpRequest operation

Method	Describe
Abort ()	Stop the current request
getAllResponseHeaders ()	Returns the header of all responses to the HTTP request as a Build/value
getResponseHeader ("header")	Returns the string value of the specified header
Open (String "method", string "url, Bollean [Asynch], String [Username], String [Password])	The invocation of the established server, the method parameter can be a post, get, or put. The URL parameter can be a relative URL or an absolute URL. This method also includes 3 optional parameters.
Send (content)	Send requests like servers
setRequestHeader ("header", "value")	Sets the specified header to the value provided. You must now call open () before setting any headers.

Standard XMLHttpRequest Properties

Method	Describe
onReadyStateChange	Each state is changed to start the event handler, which is typically called a JavaScript function.
ReadyState	The status of the request. There are 5 desirable values: 1= not initialized, 2= is loading, 3= is loaded, In 4= interaction, 5= completed.
ResponseText	The response of the server, expressed as a string.
Responsexml	The server's response, expressed as XML, is generally parsed as a DOM.
Status	Server HTTP status code (200 corresponds to ok,404 not found (not found), etc.)
StatusText	Corresponding text for the HTTP status code (OK or not found (not found), etc.)

DOM element properties for working with XML

Property name	Describe
ChildNodes	Returns an array of all the child elements of the current element
FirstChild	Returns the first subordinate child element of the current element
LastChild	Returns the last child element of the current element
NextSibling	Returns the element immediately following the current element
NodeValue	Indicates the read/write property that represents the element value
ParentNode	Returns the parent node of the element
PreviousSibling	Returns the element immediately preceding the current element

Dom element method for traversing XML

Method name	Describe
getElementById (ID) (document)	Gets the element that has the specified unique ID property value in the document
getElementsByTagName (name)	Returns an array of child elements in the current element with the specified tag name
HasChildNodes ()	Returns a Boolean value indicating whether the element has child elements
GetAttribute (name)	Returns the attributes of an element, specified by name

The information about DOM properties and methods used when creating content dynamically

Properties/ Method	Describe
Docment. CreateElement (TagName)	The CreateElement method on a Document object can create an element with tagname specified. If a string div is a parameter, a DIV element is generated.
Docment. createTextNode (text)	The createTextNode method on a Document object creates a node that contains static text.
. AppendChild (Childnode)	AppendChild adds the specified node to the list of child nodes of the current node (as a new child node). For example, you can add an option element as a child node of a SELECT element.
. GetAttribute (name)	These methods set the value of the name attribute in the element, respectively
. GetAttribute (Name,value)
. InsertBefore (Newnode,targetnode)	This method inserts the node newnode as a child of the current element into the front of the TargetNode element
. RemoveAttribute (name)	This method removes the attribute from the element name
. RemoveChild (Childnode)	This method removes the child element from the element Childnode
. ReplaceChild (Newnode,oldnode)	This method replaces the node NewNode with the OldNode
. HasChildNodes ()	This method returns a Boolean value that indicates whether the element has child elements

http://www.bkjia.com/PHPjc/1102861.html www.bkjia.com true http://www.bkjia.com/PHPjc/1102861.html techarticle properties and methods of Dom and XMLHttpRequest objects, Domxmlhttprequest standard XMLHttpRequest operation method Description Abort () Stop current request getallresponseheaders () Put all the HTTP requests to the sound ...

