pubsub javascript

Personal Summary: It takes 15 minutes to finish this article, this article introduced the abstract syntax tree and JS engine parsing these syntax tree process, referred to lazy parsing-that is, the process of converting to AST is not directly into the function body parsing, when the function body needs to be executed when the corresponding conversion. (because some function bodies are simply declared, and are not actually called)Parsing, Syntax abstraction tree, and 5 tips for minimizing parsing

When I read the jQuery source code, I often think that those factors will make me unable to read the code. Which of the most critical factors is the earliest thought of as the architectural design of jQuery, when I finally found the jQuery architectural design portal, I found that the skillful use of the basic javascript syntax is the reference for reading the source code... syntaxHighlighter. all (); When I read the jQuery source code, I often think

JavaScript learning Summary-tips, practical functions, concise methods, programming details, javascript details Sort out some JavaScript skills, practical functions, and common function implementation methods for reference only Variable Conversion //edit http://www.lai18.com var myVar = "3.14159",str = ""+ myVar,// to stringint = ~~myVar, // to integerflo

Personal Summary:A JavaScript engine is implemented by a standard interpreter, or by an instant compiler.Interpreter (interpreter): interprets one line and executes one line.Compiler (Compiler): all compiled into machine code, unified execution. (reduces the overhead of switching and scheduling, faster.) )The V8 engine is an instant compiler.Optimization strategy for V8 engine:1. Inline: Replace the expert code called by the function with the called f

This article describes how to quickly learn JavaScript free tutorial resources for beginners. It is a very good learning site. If you need it, you can refer to it. JavaScript is familiar to everyone, but only a small number of people know how to use it and how to build applications. This "small part" of people refer to the talented young people, network programmers, and IT professionals. But for a newbie or

JavaScriptQuick StartJavaScript code can be directly embedded anywhere in the Web page, but usually we put JavaScript code in included code is the JavaScript code, it will be directly executed by the browser. The second approach is to put the JavaScript code in a separate .js file and then in the HTML by introducing this file.Example one: Put it inside the head

Javascript has a bad reputation on the Internet, but it is hard for you to find another language that is so dynamic, so widely used, and so rooted in our lives. This article is translated from 5 Reasons Your Javascript Stinks. Javascript has a bad reputation on the Internet, but it is hard for you to find another language that is so dynamic, so widely used, and s

In JavaScript, all objects except the five primitive types (numbers, strings, Boolean values, null, and undefined) are objects. Therefore, I don't know how to continue learning objects? This article will share with you the in-depth study and summary of javascript objects. I. Overview An object is a composite value that aggregates many values (original values or other objects) and can be accessed through at

Observer pattern1. Create a message Publisher object PubSubvar PubSub = {1.1 Creating an array of subscriber informationSubscriber: [],//stores an array of subscriber information, including the subscriber and its behavior function (callback function)1.2 How to add a subscriptionAddsub:function (callback, obj) {This.subscriber.push ({ctx:obj,cb:callback});//(The Subscriber Information "subscriber and its behavior function (callback function)" is added

Deep Learning of JavaScript objects and deep learning of javascript In JavaScript, all objects except the five primitive types (numbers, strings, Boolean values, null, and undefined) are objects. Therefore, I don't know how to continue learning objects? I. Overview An object is a composite value that aggregates many values (original values or other objects) and

In-depth analysis of the creation of objects in javascript this small series is the most popular article in my blog. Some bloggers urged me to finish the next article, yesterday and today, I found that I could not finish my next half of the article, so I divided the next article I was going to write into two parts. This topic... SyntaxHighlighter. all (); In-depth analysis of the creation of objects in javascript