JavaScript

Phpchina learned pcti a few days ago to teach CSS and JavaScript first to see The identifier for JavaScript Identifiers are symbols defined in JavaScript such as variable names, function names, array names, and so on. Identifiers can consist of any

Using the JavaScript framework When we talk about the Window object, we mentioned that a Web page within a frame is also a Window object, that is, a frame object is also a Window object. The easiest thing to understand is that each HTML file

The first way: Factory method A factory function (factory function) that can create and return objects of a particular type. function Createcar (scolor) { var otempcar = new Object; Otempcar.color = Scolor; Otempcar.showcolor =

The effect of Eval is simply to pass a string to the JS interpreter, which the JavaScript interpreter interprets as JavaScript code and executes it. For the simplest example: Copy Code code as follows: Very simply, interpret

In JavaScript, the global environment itself is an object. This object is window in the browser host, and when JavaScript is used in other non-browser hosts, such as an embedded environment, it may be another object. It also corrects the idea that

typeof is used to get the type of a variable, typeof generally can only return the following results: number,boolean,string,function,object,undefined. We can use TypeOf to get whether a variable exists, as if (typeof a!= "undefined") {}, do not use

What are functions (function)function sum (a,b) {return a+b;}In fact, the popular saying is a name of the Code section, convenient reuse.To be aware of:1.Javascript function syntax, because Javascript itself is case-sensitive, so a function cannot

the use of Window.opener Window.opener returns a reference to the window that created the current window, such as clicking a link on the a.htm and opening the b.htm, and then we're going to enter a value on the b.htm and give it a TextBox with ID

First of all, why we need to discuss this issue. Now a lot of mobile applications, may be directly embedded in a Web page. The benefits: one is the function of the update convenient, easy to maintain, only need to maintain the server page, do not

First look at how to click a button on the project WebView, you can reach the calling OC code The above page is nested inside the webview of a project page, print order after clicking (Click event is a JS method), need to call the OC inside the

Break function Mybreak () {for (var i = 0; i Output: 012 Break: Jump out of the current loop, start from outside the current loop, ignore any other statements in the loop body and test for cyclic conditions. It can only jump out of

Javascript closures Closures, Javascript is a more important concept, for beginners, closure is a particularly abstract concept, especially the definition of ECMA specification, if there is no combat experience, it is difficult to understand it

This method creates an HTML hypertext link that requests another URL.Grammar String.link (Hrefname) The following are the details of the parameters: Hrefname: Any string specifies an HREF tag; It should be a valid URL return value:

The prototype property can add properties and methods to any object (number, Boolean, String, date, and so on). Note: The prototype (PROTOTYPE) is a global property that can be used in almost all objects.Grammar Object.prototype.name =

I have in the development work and not according to the norms of the development of colleagues to cooperate with him can not use the "happy" to describe the. Now I write the purpose of this article in addition to share a little experience with you,

First, the preface In the past, JavaScript was used to do simple web effects, such as form validation, floating ads, and so on, so JavaScript didn't get much attention at the time. Since the start of Ajax, people have found that using JavaScript can

The 18th Chapter Advanced Technique 1. Advanced function 1.1 Constructor for scope security ① calls a constructor directly without applying the new operator, it maps to the Global object window because of the late binding of the This object, causing

A detailed look at the attachment example, or write a relatively simple. 1. Functions on Cookies: Copy Code code as follows: /** * Cookie Operation tool. * Use Method: Save value: Cookietool (' name ', ' 1 ', {expires:7})//= save a

I. Data typesJavaScript is a weak type of scripting language that has 6 data types and is divided into basic data types, special data types, and composite data types. 1. Basic data type: Numeric type, String type, Boolean type 2. Special Data type:

Returns the day of the month, on a specified date, by the JavaScript date.getdate () method of the local time. The value returned by getdate is an integer between 31 and 1.Grammar Date.getdate () The following are the details of the