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The DOM operations of this section of JavaScript mainly include the following:
Select elements by ID, name, tag name;
Get and set element attributes through GetAttribute and SetAttribute;
Get the parent element through ParentNode, createelement dynamically create nodes, AppendChild, and removechild dynamically add or remove nodes.
Basic Concepts 2.1.1 What is DOMDom is the short name o
Common event Model 1. is binding on HTML pagesbutton id="button" onclick="function();">按钮button>2. Binding event handling in JavaScript script filesdocument.getElementById(‘button‘function;The event model in IE 1. Use the script for binding (this binding is seldom used)script for="btn1" event="onclick" type="text/javascript"> alert("您单击了我");script>、2. Binding using the Attachevent methoddocument.getEleme
, an in-depth understanding of the length attribute can be used flexibly in the development process.2 , prototype propertiesReturns a reference to the object type prototype. The prototype property is common to object.Objectname.prototypeThe ObjectName parameter is the name of the object.Description: Provides a basic set of functions for a class of objects using the prototype property. The new instance of the object "inherits" the action given to the object's prototype.For array objects, use the
What is DOM?The DOM is the Document Object model. Is the programming interface for HTML and XML documents. It provides a structured representation of the document and defines a way to access the structure from within the program, altering the structure, style, and content of the document. The DOM parses a document into a collection of structures consisting of nod
JavaScript HTML DOMThrough the HTML DOM, you can access all the elements of a JavaScript HTML document.HTML DOM (Document Object model)When a Web page is loaded, the browser creates a Document object model for the page.With the programmable object model, JavaScript has the a
scripting language, similar to PHP
4.DOM
Document Object Model
The HTML DOM defines a standard way to access and manipulate HTML documents. The DOM tree is built as a tag to build the entire HTML into a tree structure
The JavaScript operation of HTML is achieved through the DOM
first, intercept the length, add new data at the incision)Can be added, deleted, changed. The return value is a clipped value4. Do not change the original arrayConcat ()Link array arr.concat (ARR1); The return value is a new array;Join ()The argument must be a string, convert the array to a string, and link to the parameter.ToString ()Convert an array to a stringSlice (intercept from this bit, intercept to that bit);Intercept# # # class Array1. property to be an indexed (numeric) attribute, mus
DOM (DocumentObjectModel) is a Document Object Model. APIs for HTML and XML documents (application interfaces) are provided ). This article introduces the common APIs for javascript operations on dom. If you are interested in javascriptdomapi, join us.
Preface
DOM (Document Object Model) is a Document Object Model. It
Original article: speeding up javascript: working with the DOM
Author: keekim Heng, Google Web Developer
Http://www.blogjava.net/emu/archive/2010/03/01/314185.html
When we develop Internet rich applications (RIA), we often write some JavaScript scripts to modify or add page elements. These tasks are completed by Dom
First, jquery operation Dom-queryHTML operations-HTML (): Reads or modifies the HTML content of a node, similar to the innerHTML property in JavaScript650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M01/7E/6C/wKiom1b-X2yxgKrTAABY4VoUGQs797.png "title=" Web.png "alt=" Wkiom1b-x2yxgkrtaaby4vougqs797.png "/>Text manipulation-Text (): Reads or modifies the text content of the node, similar to the Textcon
Splittext ()."DocumentFragment Type"Of all node types, only documentfragment does not have a corresponding tag in the document. Although you cannot add a document fragment directly to a document, you can use it as a "warehouse" where you can save nodes that may be added to the document in the future. The nodes in the document fragment are not part of the document tree. Adding the contents of a document fragment to a document by AppendChild () or insertbefore (), even if the document fragment is
What is DOM, not javascript? DOM is a document. DOM is a set of web standards used to describe how scripts interact and access structured documents. DOM defines a series of objects, methods, and attributes for accessing, manipulating, and creating content, structures, styles
The contents of JavaScript contain the following three parts:
ECMAScript (CORE): JavaScript Language Foundation;
DOM (Document Object model): Provides access to HTML and XML interfaces;
BOM (Browser object model): Provides objects and methods that are independent of the content and interact between browser windows.
I. ECMAScriptECMASCRIPT Sp
. property = value//set, add style attribute.Note: If the attribute is "-" linked, the "-" is removed and the first letter of the following word is capitalized. 2. Inline style and CSS cascading style common wayObject. Currentstyle. Properties IE is used to get the actual style attributes.getComputedStyle (object, null). Firefox is used to get the actual style attributes.Note: You can only get settings that cannot be set.7:dom Additions and deletions
This article mainly introduces the DOM interactive operation technique of javascript performance optimization, and summarizes and analyzes various common optimization operation techniques of JavaScript in DOM operations based on examples, for more information, see the example in this article to describe the
features that are similar to css,javascript and Dom should also form an additional layer of instruction. Similar to using the Style property, using attributes such as onclick in an HTML document is an inefficient and problematic practice. If we use a "hook", like the CSS mechanism of class or ID attributes, the JavaScript code call behavior and HTML document str
Article Introduction: The first two chapters talk about getting DOM elements. This chapter begins with how to manipulate the DOM. 1. The operation of the DOM element on the page is simply to manipulate the style of the DOM element. If this DOM element has no style, it is not
;
An object is a data entity that is composed of properties and methods, and in JavaScript, properties and methods are accessed using the "dot" syntax:
Object.property
Object.Method ()
Creating a new instance of a given object requires the use of the New keywordvar new person;2.7.1 Built-in objects JavaScript provides a set of pre-defined objects that can be used to refer to the built
1. Dom of browserBrowsers often require DOM implementations and JAVASCRIPT implementations to remain independent of each otherWhat does this mean for performance? Simply put, two separate sections with a functional interface can lead to performance loss. A very figurative metaphor is to think of DOM as an island, and
This section provides a complete JavaScript reference manual:
JavaScript local objects and built-in objects
Browser Object (BOM)
HTML DOM Object
JavaScript Object reference manualThis reference manual describes the properties and methods of each object and provides an instance.
Array
Boolean
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