javascript complete reference

think that this is good:).Here is an example program. Contains all of the above concepts.Exampledefine:cricle//////////////////function Circle (r) {THIS.R = R;}Circle.pi = 3.14;Circle.prototype.PI = 3.14;Circle.prototype.area = function () {return CIRCLE.PI*THIS.R*THIS.R;}CIRCLE.PROTOTYPE.AREA2 = function () {return this. PI*THIS.R*THIS.R; }Testc = new Circle (3);Alert ("Area1:" +c.area ());Alert ("AREA2:" +c.area2 ());Circle.max = function (A, b) {return A.R>B.R? A.R:B.R;}Alert ("Max is" +circ

Su-MO OrangeLinks: https://www.zhihu.com/question/27114726/answer/35481766Source: KnowCopyright belongs to the author. Commercial reprint please contact the author for authorization, non-commercial reprint please specify the source.Before the first time to see this part of the time is also a bit foggy, today saw the subject asked this question and carefully looked again, consulted the relevant information, now is more clear.Combine your own understanding to sort it out.Because to be completely c

Description of reference types of basic javascript data types and value types I. Basic Data Types In javascript, the keywords used to declare variables are var. This is different from other programming languages, but javascript also contains five basic data types (simple data types ), they are: Undefined, Null, Boolean

JavaScript basic Data type:JS basic data types include: Undefined,null,number,boolean,string. The base data type is accessed by value, which means that we can manipulate the actual values that are saved in the variable.　　1. The value of the base data type is immutableNo method can change the value of a primitive type, such as a string:var name = "Change"; Name.substr ();//hangconsole.log (name);//changevar s = "Hello"; s.touppercase ()//hello; Console

DOCTYPE HTML>HTMLLang= "en"OnUnload= "ud ()">Head> MetaCharSet= "UTF-8"> title>Titletitle> Script> functionDemo () {Alert ("Hello"); } functionOnover (ooj) {ooj.innerhtml= "mouse move in display"; } functionOnout (ooj) {ooj.innerhtml= "Mouse out Display"; } functionChangedemo (BG) {alert ("the content has changed .") } functionChangeDemo1 (BG) {Bg.style.background= "Red"; } functionChangeDemo2 (BG) {Bg.style.background= "Blue"; } f

First, let's take a look at a javascript interview question.Source code(I made a small change). This example is used to understand the reference type in JavaScript. Then we made a preliminary study on the objects in JavaScript. 1:VaR A = {X: 1 }; 2:VaR test = function (OBJ) 3:{ 4:OBJ. x = 2; 5:Console. Log ("

JavaScript reference Javascript uses "Object-Oriented Programming" or "Object-Oriented Programming. The so-called "Object-Oriented Programming" refers to dividing the scope of javascript into large and small objects. objects are still divided into objects until they are very detailed. All programming is based on object

JavaScript Reference Tutorials JavaScript is used as "object-oriented programming" or "object-oriented programming." The so-called "object-oriented programming", meaning that JavaScript can be involved in the scope of the division into large and small objects, objects continue to divide the object until very detailed,

javascript| Reference | Tutorial JavaScript is used as "object-oriented programming" or "object-oriented programming." The so-called "object-oriented programming", meaning that JavaScript can be involved in the scope of the division into large and small objects, objects continue to divide the object until very detailed

Use RequireJS to optimize the JavaScript reference code method, and requirejs to optimize RequireJS is an effective way to improve the speed and quality of your javascript code. It also makes your code easier to read and maintain. In this article, I will introduce you to RequireJS and how to use it. We discuss introduction of files and definition modules, and eve

. These statements may contain "return" statements. When a function is executed, a return statement is encountered, and the function stops executing immediately and returns to the program that called it. If the "return" is followed by a Inside the function, parameters can be used directly as variables, and variables can be created with the Var statement, but these variables cannot be called by procedures outside the function. To make the information inside the function be called externally, eith

This article follows the reference type (top) of JavaScript advanced programming, and continues below:Date typeDate is a date class that can be used to get the date and time and the number of milliseconds for the specified date. The date class provides a rich API that can be understood through the documentation on the MDN: Click here to jump to MDN, which is not explained in detail here.RegExp typeRegular e

OldNode.These are the methods and properties of the nodes in the DOM, because they are commonly used, remember!5. In DOM programming, an HTML document is treated as a DOM tree, and the DOM maps all HTML elements into node nodes. So we can use node nodes (objects)Properties and nodes. The properties and methods of 6.document+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++2012-04-20 16:07 2546 People read review (0) Favorite ReportDoc

varfn =function(){};6 varn =NULL;7 varobj = {};8 vararr = [];Ten typeofStr//"string" One typeofNum//"Number" A typeofBoo//"Boolean" - typeofU//"undefined" - typeofFn//"function" the typeofN//"Object" - typeofObj//"Object" - typeofArr//"Object"It is not difficult to see from the above example that the TypeOf operator is the best tool for determining whether a variable is a string, Boolean, numeric, or undefined. However, if the value of the variable is an object or null, the TypeOf operator retu

passed by value, obj accesses the same object by reference. Therefore, when you add the Name property to obj inside a function, the person outside the function will also react because the object pointed to by person has only one and global object in the heap memory. Many developers mistakenly think that the objects modified in the local scope are reflected in the global scope, stating that the parameters are passed by

Requirejs is an effective way to improve the speed and quality of your JavaScript code, and it also makes your code easier to read and maintain. In this article, I'll introduce you to Requirejs and how you should use it. We discuss the introduction of file and definition modules, and even the knowledge of optimization. Simply put, Require.js is a script loader that allows you to separate your JavaScript c

This article ish5eduAgency officialHTML5 Trainingtutorials, the main introduction:JavaScript Intensive Tutorials--Object value passing and reference passingFunctionsetname (obj) {obj.name= "Tom";//Before execution, the Name property of obj and person at this time is undefinedobj1=new Object (); obj1=obj;//declares a global object, then obj, obj1, and person should be the same object at this time }//setname function is executed, the Obj object is destr

Chapter5 Reference typeThe contents of this chapter:L Use objectsL Create and manipulate arraysL understand basic JavaScript typesL use basic type and basic packing typeTechnically, JavaScript is an object-oriented language, but it does not have the basic structure of classes and interfaces supported by traditional object-oriented languages.L

Object-Oriented Programming Javascript uses "Object-Oriented Programming" or "Object-Oriented Programming. The so-called "Object-Oriented Programming" refers to dividing the scope of JavaScript into large and small objects. objects are still divided into objects until they are very detailed. All programming is based on objects, object-based. A variable or webpage document, window, or screen is an object. Th

Prototype: JavaScript reference type What is prototype? The prototype attribute in the Javascript Object can return the prototype reference of the object type, and the prototype belongs to the constructor. In JavaScript, each object is connected to a prototype object and