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A function is a special object;Object: A collection of properties (name-value pairs);The function is used to initialize (with the new operator) a newly created object is called a constructor.The object is called as a method when the property is a function.Within a function body, a local variable takes precedence over a global variable of the same name.code example:varscope = "global"; // Declare a global variablefunctionCheckscope () {varScope = "local";//life a local variable with the same nam
PDF version, English version 158th page,var IsArray = Function.isarray | | Function (o) {return typeof o = = = = "Object" object.prototype.tostring.call (o) = = = "[Object Array]";}; return typeof o = = = "Object" object.prototype.tostring.call (o) = = = "[Object Array]";};Array.isarray is a function provided by ES5, this example is to implement this function in ES3, first, if the browser supports Array.isarray, it is assigned to IsArray, otherwise th
GetCookie () function that resolves the value of the Document.cookie property, stores the corresponding name/value pair in an object, and returns the object at the end of the function.Parsing Document.cookie Property values/** returns the value of Document.cookie as an object of name/value pairs * Assuming that the value of the stored cookie is encoded with the encodeurlcomponent () function */function GetCookie () { var cookie = {}; Initialize the last object to
: The instance method of JS must use the This keyword, and the class's methods usually do not use the This keyword, they refer to its parameter operation;The P222-based inheritance mechanism in the extended p223js of class 9.4 is dynamic: Objects inherit properties from other prototypes, and if the properties of the prototype change after the object is created, it also affects all instance objects that inherit the prototype, and we can augment the JS class by adding a new method to the prototype
; Db.users.update ({"name": "Joe"}, Joe) Using the modifier $set, $inc, $ne, $push, $addToSet, $each //Add or remove a key valueDb.users.update ({"Name": "Joe"}, {"$set": {"Favorite book": "War and Peace"}}) db.users.update ({"Name": "Joe"}, {"$unset": {"Favorite book": 1}}) //Increase or decrease valueDb.games.update ({"Game": "Pinball", "User": "Joe"}, {"$inc": {"score": 50}}) //add a value to an arrayDb.papers.update ({"Authors cited": {"$ne": "Richie"}}, {"$push": {"authors cited": "Richie
Brief introductionSince 1996, JavaScript's: Authoritative guide has been defined for JavaScript Bible programmers, Programmer's guides and a comprehensive reference to the core language and Web browser of the client JavaScript API. The 6th edition includes HTML5 and ECMAScript 5, a new chapter with jquery and server-side Java
techniques to manage very big C + + software projects. Certainly a good read, if it is only is up to date. It was written long before c++98, and misses on many features (e.g. namespaces) important for large scale projects. If you need-to-work in a big C + + software project, you might want to read it, although-need-take-more than a grain of salt with it. The first volume of a new edition is expected in 2015. Inside the C + + Object Model (Stanley Lippman) If you want to know how virtual membe
Learn the C + + book listTurn fromHttp://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-listBeginnerintroductoryIf you were new to programming or if you had experience in other languages and is new to C + +, these books is highly reco Mmended. C + + Primer * (Stanley Lippman, Josée Lajoie, and Barbara E. Moo) (updated for c++11) Coming at 1k pages, This was a very thorough introducti
either by the drivers or By a user ' s application code). Maintaining this streamlined (streamlined; improved) design is one of the reasons MongoDB can achieve such high performance.Simple administrationMongoDB tries to simplify database administration by making servers administrate themselves as much as possible. Aside from starting the database server, very little administration is necessary. If a master server goes down, MongoDB can automatically failover (fail-over redundancy) to a backup s
implement asynchronous i/o297Part Two client JavaScriptChapter 13th JavaScript309 in Web browsers13.1 Client JavaScript30913.2 Embedding JavaScript313 in HTML13.3 JavaScript Program execution 31913.4 Compatibility and interoperability 32613.5 Accessibility 33313.6 Security 33413.7 Client Framework 33914th. Window Object 34114.1 Timer 34214.2 Browser positioning and navigation 34314.3 Browsing History 34514.4 Browser and screen information 34614.5 dia
HTML5 Authoritative Guide is a systematic study of web design of the authoritative reference books. The HTML5 authoritative guide is divided into five parts: the first part introduces the preparation of this book and the latest developments in HTML, CSS, and JavaScript; the second part discusses the HTML elements and details the new and modified elements in HTML5
: Network Disk DownloadContent Introduction······This book combines the latest developments and features in web development since Web 2.0, introduces the current status of Web site performance issues, the causes, and the principles, techniques, and best practices for improving or solving performance problems. Focus on the behavioral characteristics of Web pages, explaining technologies that optimize elements such as Ajax, CSS, JavaScript, flash, and i
the browser of multiple players.HTML5 Game Development Advanced Guide DirectoryChapter 1th HTML5 and JavaScript overviewThe 2nd Chapter creates the basic game world3rd Physics Engine BasicsThe 4th Chapter Physics engine IntegrationThe 5th chapter creates the world of real-time strategy gameThe 6th chapter joins the unit7th Unit Intelligent MobileThe 8th chapter adds more game elementsChapter 9th adding wea
856.4.2 Cases 2: Web page category 876.4.3 MongoDB and MapReduce 877th Advanced Guide 917.1 Database Commands 91How the 7.1.1 command works 927.1.2 Command Reference 927.2 Fixed Set 957.2.1 Properties and Usage 967.2.2 Creating a Fixed collection 967.2.3 Natural Sort 977.2.4 Tail Cursor 987.3 Gridfs: Storing files 997.3.1 Start using Gridfs:mongofiles 997.3.2 working with the MongoDB driver Gridfs 1007.3.3 Internal Principle 1007.4 Server-side script
《WebProgramming Basics:CSS,JavaScript,JQueryclosely around web designers in theWebThe technology that needs to be mastered in the foreground development, comprehensively introduced the useDiv+css,JavaScript,JQuerymakeWebpage design and production techniques. TheWebProgramming Basics:CSS,JavaScript,JQuery"Not simply to explain the grammar, but through a real web s
: Indicates whether the property can be deleted or modified.First, create the object1. Direct volume of objects var empty={}; // var point={x:0,y:0}; var point2={x:point.x,y=point.y}; var book={ "main title": "JavaScript", // "Sub-tit": "The Definitive Guide", // for: ' All audiences ', // property named reserved word , you must us
subexpression of parentheses (possibly nested), the group index is left-to-right, the left parenthesis, (?: The form of grouping is not numbered Specify a matching location /tr> ^ matches the beginning of the string, the multi-row retrieval, Matches the beginning of a line $ Matches the end of the string, in multiple rows of the search, matches the end of a line \b matches the boun
This article mainly introduces how JS + CSS achieves sliding door effects with small triangle guidance. It can implement sliding door functions with arrow prompting effects, and involves related techniques related to JavaScript dynamic page element styles, for more information about JS + CSS, see the example below. Share it with you for your reference. The details are as follows: This is a JS + CSS sliding door with a small triangle
This article mainly introduces how JS + CSS achieves sliding door effects with small triangle guidance. it can implement sliding door functions with arrow prompting effects, and involves related techniques related to JavaScript dynamic page element styles, for more information about JS + CSS, see the example below. Share it with you for your reference. The details are as follows: This is a JS + CSS sliding door with a small triangle
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