What are the javascript dom methods?

dom methods include: close(), open(), write(), writeln(), focus(), item(), assert(), clear(), count(), error(), group(), info(), log(), table(), etc.

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

Methods of DOM Document object

Method	Description
document.addEventListener()	Add a handle to the document
document.adoptNode(node)	Return the adapted node from another document to the current one document.
document.close()	Closes the output stream opened with the document.open() method and displays the selected data.
document.createAttribute()	Create an attribute node
document.createComment()	The createComment() method creates a comment node.
document.createDocumentFragment()	Create an empty DocumentFragment object and return this object.
document.createElement()	Create element node.
document.createTextNode()	Create a text node.
document.getElementsByClassName()	Returns a collection of all elements with the specified class name in the document as a NodeList object.
document.getElementById()	Returns a reference to the first object with the specified id.
document.getElementsByName()	Returns a collection of objects with the specified name.
document.getElementsByTagName()	Returns a collection of objects with the specified tag name.
document.importNode()	Copy a node from another document to this document for application.
document.normalize()	Delete empty text nodes and connect adjacent nodes
document.normalizeDocument()	Remove empty text nodes and connect adjacent nodes'
document.open()	Open a stream to collect data from any document. The output of the write() or document.writeln() method.
document.querySelector()	Returns the first element in the document that matches the specified CSS selector
document. querySelectorAll()	document.querySelectorAll() is a new method introduced in HTML5 that returns a list of all element nodes that match the CSS selector in the document
document.removeEventListener ()	Remove the event handler in the document (added by the addEventListener() method)
document.renameNode()	Rename the element or attribute node.
document.write()	Write HTML expression or JavaScript code to the document.
document.writeln()	Identical to the write() method, except that a newline character is written after each expression.

Methods of DOM element object

Set the document or element to get focusReturns the attribute value of the specified elementReturn Specify the attribute nodeReturns the collection of all child elements of the specified tag name. Returns a collection of all elements with the specified class name in the document as a NodeList object. Returns the execution APIs object of the specified feature. Returns an object of associated key values ​​in an element. Returns true if the specified attribute exists in the element, otherwise returns false. Returns true if the element has any attributes, otherwise returns false. ##elementelement##element.insertBefore() element.isDefaultNamespace()##element.isEqualNode() element.isSameNode()element.isSupported()element.normalize()element.querySelector()##document.querySelectorAll()Return a list of all child element nodes that match the specified CSS selector element .removeAttribute()Remove the specified element from the element Attribute.removeAttributeNode()Deletes the specified attribute node and returns the removed node. ##elementRemove a child elementelementRemove the event handle added by the addEventListener() method.replaceChild()Replace a child element.setAttribute()Set or change the specified attribute and specify the value. .setAttributeNode() Set or change the specified attribute node. .setIdAttributeNode().setUserData()Convert an element into a stringReturns the index of an element based on the document tree

Method	Description
element.addEventListener()	Add an event handler to the specified element
element.appendChild()	Add a new child element to the element
element.cloneNode()	Clone an element
element.compareDocumentPosition()	Compare the document positions of two elements.
##element.focus()
element.getAttribute()
element.getAttributeNode()
element.getElementsByTagName()
element. getElementsByClassName()
element.getFeature()
element.getUserData()
element.hasAttribute()
element.hasAttributes()
.hasChildNodes()Returns whether an element has any child elements
.hasFocus()Returns a Boolean value to detect whether the document or element has focus
Insert a new child element before the existing child element
If specified namespaceURI returns true, otherwise returns false.
Check whether two elements are equal
Checks that all two elements have the same nodes.
Returns true if the specified feature is supported in the element.
Makes this a "normal" form in which only structures (e.g. elements, comments, processing instructions , CDATA sections and entity references) separate Text nodes, that is, all text nodes below elements (including attributes), with neither adjacent text nodes nor empty text nodes
Returns the first child element matching the specified CSS selector element
	element
	element
	.removeChild()
	.removeEventListener()
##element
element
element
##element.setIdAttribute()
element
element	Specifies the key value in the element associated objects.
##element.toString()
nodelist.item()
Method of DOM attribute object

Method

Description

##nodemap.getNamedItem()nodemap##nodemap.removeNamedItem()nodemap.setNamedItem()

DOM event methods

The specified attribute node returned from the node list.
.item()Returns the node at the specified index number in the node list.
Delete the specified attribute node
Set the specified attribute node (by name)

Method	Description
initEvent()	Initialize the properties of the newly created Event object.
preventDefault()	Informs the browser not to perform the default action associated with the event.
stopPropagation()	No longer dispatch events.
addEventListener()	Allows registration of listening events in the target event (IE8 = attachEvent())
dispatchEvent()	Allows sending events to the listener (IE8 = fireEvent())
removeEventListener()	Run a listening event registered on the event target (IE8 = detachEvent())
handleEvent()	Register any object as an event handler
createEvent()
initMouseEvent()	Initialize the value of the mouse event object
initKeyboardEvent()	Initialize the value of the keyboard event object

Method of the DOM Console object

Method	Description
assert()	If the assertion is false, an error message will be output to the console.
clear()	Clear the information on the console.
count()	Record the number of count() calls, generally used for counting.
error()	Output error information to the console
group()	In control Station creates a message group. A complete information group starts with console.group() and ends with console.groupEnd()
groupCollapsed()	Create an information group on the console. Like console.group() , but it is collapsed by default.
groupEnd()	Set the end of the current information group
info()	Console output A message
log()	The console outputs a message
table()	to Display data in tabular form
time()	Timer starts counting time and is used in conjunction with timeEnd() to calculate the exact time spent on an operation.
timeEnd()	Time ends
trace()	Displays the currently executed code The call path in the stack.
warn()	Output warning information, add a yellow triangle at the beginning of the information to indicate warning

##CSSStyleDeclaration object methods

MethodDescriptiongetPropertyPriority( )Returns whether the specified CSS property has the "important!" attribute set. getPropertyValue()Returns the specified CSS property value. item()Returns the CSS property name in the CSS declaration by index. removeProperty()Remove a CSS property from a CSS declaration. setProperty()Create or modify CSS properties in the CSS declaration block.

HTMLCollection object methods

Methods Descriptionitem()Returns the element at the specified index in the HTMLCollection. namedItem()Returns the element in the HTMLCollection with the specified ID or name attribute. [Recommended learning:

javascript advanced tutorial]

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