JavaScript

# oo# #创建对象1. Relationships between prototypes, constructors, and instances* The Construct-> constructor of the prototype; call the isPrototypeOf (obj) method to determine the relationship with the instance;* Prototype-> prototype of the constructor

#函数表达式# #函数声明和函数表达式的区别There are two forms of function definition, one is function declaration, and one is function expressionWhen using declarations, pay attention to function declaration elevation, such as using declarations in an if statement to

What is a closure? Closures are closure, in short, closures are: A closure is a set of local variables for a function, except that these local variables will continue to exist after the function returns. Closures are just the "stacks"

StringSUBSTRING (start,end):Slice (start,end);The second parameter of both functions is the end setting of the top interval, not the length of the interval,Substring the processing of a negative end is treated as 0,The slice method adds it to the

The sort () method of array in Javascript actually converts the content to be sorted into a string (called toString ()), and then compares it in the first ASCII code of the string, not the number.Let's see what the official

Role[1] The elimination of some of the JS syntax unreasonable, not rigorous, unsafe problems, reduce weird behavior and ensure that the code is safe to run[2] Improve compiler efficiency, increase operating speedUse[1] The entire script is enabled

1.3 Primitive expressions1. Direct Volume: 1.23//Digital Direct volume "Hello"//String Direct volume ...        2. Original expression of reserved words: TRUE//Return Boolean: TRUE/False NULL//return a value: null 3. Variable: I//returns the value

"Object Definition" a collection of unordered properties whose properties can contain basic values, objects, or functions// a Simple object instance var New Object (); = "Nicholas"; =; = "Software Engineer"; function () {

1 HTML>2 Head>3 MetaCharSet= "Utf-8">4 title>Javascript Cookiestitle>5 Scripttype= "Text/javascript">6 functionGetCookie (c_name)7 {8 alert (document.cookie);9 if(Document.cookie.length>0)Ten { One C_start=document.cookie.indexOf (C_name+ "="

1. Host object and host environmentHost object: The object provided by the hosting environment implemented by ECMAScript, which can be understood as: the object provided by the browser. All of the BOM and Dom are host objects. Hosting Environment:

Array1 Number of array literals2 length3 Delete4 Listing5 Confusing places6 methods7 DimensionsArray1 Number of array literalsvar empty = []; var numbers = [ ' zero ', ' one ', ' one ', ' one ', ' three ', ' four ', ' Five ', ' six ', ' seven '

Js observer mode publishing/subscriptionIn the past, when writing pages, there were never so many asynchronous operations. I only learned about asynchronous programming when using 'setinterval' and 'xmlhttprequest. In the course of learning node

Cocos2dx skeleton animation Armature source code analysis (2), cocos2dxarmature The previous article introduces the built-in skeleton animation of cocos2dx in general. This article introduces the meaning of each field of the exported configuration

Js fade-in and fade-out focus chart slide effect code sharing, js fade-in and fade-out This article describes the javascript fade-in and fade-out focus slides. Share it with you for your reference. The details are as follows:This is a

Let's talk about impress. js's preliminary understanding and impress. js's understanding 1. Understanding of impress. js Impress. js uses CSS3 and JavaScript to implement a presentation layer framework (Demo tool) for developers ). Currently, common

Js calls Baidu map and calls Baidu map's search function, js search function How js calls Baidu Map The Code is as follows: Hello, world Js calls Baidu map search Reference Baidu js Api Create an address Parser: Var localSearch =

Jquery implements the title font conversion of the sliding door menu effect, jquery sliding door This document describes how jquery implements the sliding menu for title font conversion. Share it with you for your reference. The details are as

JavaScript simple drop-down menu instance code, javascript drop-down menu This example describes the sample code of the simple JavaScript drop-down menu. Share it with you for your reference. The details are as follows: This is a JavaScript

JavaScript code for implementing the tab Sliding Door Effect on the left-side webpage, And the tab sliding door This article describes how js implements the tab sliding door on the left. Share it with you for your reference. The details are as

Use the Canvas of HTML5 to implement the scratch effect. First, we will show you the effect: View demo source code download Have you ever used scratch cards? The one that won the prize accidentally. Today, I will share with you a scratch card