1 Ajax Principles Ajax(Asynchronous JavaScript and XML (异步的JavaScript和XML)),是一种快速创建动态网页的技术,目的是显示动态局部刷新.通过XMLHttpResponse对象来向服务器发起异步请求,从服务器获取数据.(1) 异步的javascript: 使用javaScript语言及功能向服务器发起请求,当服务器处理完请求之后,自动执行javaScript回调函数.(客户端可以不需要等到服务器响应才能运行)(2)
1. Objects in JavaScript
JavaScript can be said to be an object-based programming language, why it is object-based rather than object-oriented, because JavaScript itself only implements encapsulation, and does not implement inheritance and
The example of this article describes the method of Php+mysql combining Ajax to realize the point-praise function. Share to everyone for your reference. Specifically as follows:
To achieve the point of praise function, there are a variety of ways
Younger brother I recently in learning JavaScript, learn to regular expression when the knowledge point is a bit messy, so special write a blog to make a summary.
Defined
There are two ways to define REG exp in javascript:
1) with new Exp:var EXP1
The this pointer is an important concept in object-oriented programming that represents the currently running object. When you implement a method of an object, you can use the this pointer to obtain a reference to the object itself.
Unlike other
We discussed how to implement encapsulation of private instance members, public instance members, private static members, public static members, and static classes in a JavaScript language. This time we'll discuss two other elements in
Summarize the differences between using DOM to parse XML files in Java and JavaScript
1. Different ways to generate DOM document objects
A in JavaScript, create the DOM document object code as follows:
Creating an XML document
Varxmldoc = new
What is JavaScript?
(1) JavaScript is a scripting language that is object-based (object) and event driven (driven) and has a secure performance.
(2) JavaScript is a scripting language developed by Netscape, whose programs can be embedded in HTML
Ii. rules for the writing of JSON
The rule of JSON is simple: an object is an unordered set of ' name/value pairs '. An object begins with "{" (opening parenthesis), and "}" (closing parenthesis) ends. Each "name" is followed by a ":" (a colon), and
Manipulating JSON strings in JavaScript:
1. Create a JSON string:
var savemenujson = [];
2. Gets the current JSON string length:
function Getjsonobjlength (jsonobj) {
var Length = 0;
For (var item in jsonobj) {
length++
}
Http://blog.sina.com.cn/s/blog_6e44dfbf0100noal.html
The basic syntax of JavaScript
JavaScript languages, like other languages, have their own basic data types, expressions and operators, and basic program frameworks.
I. Basic data types
There are
Because of the previous understanding of JavaScript is not deep enough, a time of unprepared.
Later, after two master colleagues of the guidance (to the two colleagues of admiration like the surging river endless ... ), suddenly enlightened
The
The workaround is as follows:1, in JS to the Chinese parameters of two times transcoding
The code is as follows
Copy Code
var login_name = document.getElementById ("LoginName"). Value;login_name = encodeURI
function expression
1. There are 2-clock methods for defining functions in JavaScript:
1-1. function declaration:
Copy Code code as follows:
function FuncName (ARG1,ARG2,ARG3) {
function body
}
①name property: Can read
Developing cross-browser JavaScript
1. ChildNodes the difference between FF and IE.
Node (NodeType = 1) in FF is separated by Textnode (NodeType = 3), and ie/op is not.
content
Under FF, the childnodes of Box1 is 3, IE is 1.
2. Set the style
Since the touch of JavaScript, the understanding of this parameter has been ambiguous. Although there is deep to understand, but also always feel that the kind of floating on the surface, not completely clear the clue.
But for this parameter, there
constructor is a special way to initialize a newly created object when memory has been allocated to the object. The object constructor is used to create objects of a particular type – ready objects for use, and the colleague receive constructor can
A. JavaScript core basic syntax
1.Javascript is a programming language that adds interactivity, originally invented by Netscape, and finally submitted to ECMA (European Computer Manufacturers Association), which ECMA JavaScript, which is named
Program
The basic composition of JavaScript scripting language is programmed by control statements, functions, objects, methods, attributes, etc.
One, program control flow
In any language, program control flow is necessary, it can make the whole
1, the object in JavaScript. JavaScript can be said to be an object-based programming language, why it is object-based rather than object-oriented, because JavaScript itself only implements encapsulation, and does not implement inheritance and
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.