eloquent javascript

In Javascript, any function creates an execution context during execution, because the variables and functions declared for the function may only be within the function, when calling a function, a simple method is provided to create a free variable or a private sub-function. Javascript is more casual than other programming languages, so javascript code is full of

parameters have already been abstracted once, and map functions are abstracted for the second time, A higher level can be understood as an abstract level.Functional Programming in JavaScript JavaScript is a widely misunderstood language. Because it was full of a lot of copy-paste code in early Web development, the quality of JavaScript code is usually not high,

We will share nine best-used JavaScript development tools, code editors, and javascript development tools. Web design and development is one of the more and more popular career directions. If you want to excel in this field, you must have excellent skills, such as operating on different platforms, ides, and various other tools.When talking about platforms and ides, it is no longer the time to master an IDE

The Document Object model, Document Object Modeldom, is an API that interacts with JavaScript for content. JavaScript and Dom are often used as a whole, because JavaScript is usually for DOM manipulation and interaction. The main content is from: http://net.tutsplus.com/tutorials/javascript-ajax/

This article mainly introduces the JavaScript Memory optimization, mainly because javascript applications are getting more and more complex, and memory problems such as choppy and memory overflow become no stranger, so we also talk about memory optimization, for more information, see C/C ++. The processing of JavaScript in memory has made us pay more attention to

Personal Summary: This article on the JS bottom of the working principle is introduced.Original: HTTPS://BLOG.SESSIONSTACK.COM/HOW-DOES-JAVASCRIPT-ACTUALLY-WORK-PART-1-B0BACC073CFOne, engine, runtime, call stackThis is the first chapter of how JavaScript works. This chapter provides an overview of the language engine, runtime, and call stack.In fact, there are a lot of developers who use

Personal Summary: It takes 20 minutes to finish reading this article.This is the 13th chapter of how JavaScript works.OverviewAs you know, animations play a key role in creating compelling Web applications. As users become more focused on the user experience, merchants are beginning to realize the importance of a perfect, enjoyable user experience, resulting in more and more dynamic network applications and the ability to interact more dynamically. Th

Basic javascript knowledge sharing and functions, basic javascript knowledge 1. objects are suitable for data collection and management, and are easy to form a tree structure. Javascript includes a prototype chain feature that allows an object to inherit attributes of another object. Correct use of it can reduce the initialization time and memory consumption of o

Let's talk about javascript closures and javascript closures. The following are my study notes, which are useful for beginners of Javascript. I. Scope of Variables To understand closures, you must first understand the special variable scopes of Javascript.Variables have two scopes: global variables and local variables.The special feature of

This article mainly introduces nine best-to-use JavaScript development tools and code editors. If you need them, you can refer to Web design and development as one of the more and more popular career directions. If you want to excel in this field, you must have excellent skills, such as operating on different platforms, ides, and various other tools. When talking about platforms and ides, it is no longer the time to master an IDE and "eat it all. Fie

Closure is a difficult and characteristic of Javascript language. Many advanced applications rely on closures for implementation. I have been familiar with the concept of closure for a long time, but I have been confused and cannot understand what the closure of JavaScript is and what is its use, today, I saw an article about JavaScript closures (the original art

The birth background of JavaScriptIn the 90 's, the European and American countries of the Web programs are increasingly popular, but at that time users are also using telephone dial-up internet access, throughModem, the speed is only 28kb/s. And the Web program is becoming more and more abundant. In the age of no JavaScript, the formValidation, and so on, are performed on the server side.For example, users go to a registration page, fill in User name

Original (http://www.yeeyan.org/articles/view/luosheng/24380)As a beginner, it's important to understand how a timer works in JavaScript. Often their performance behavior is not so intuitive, and this is because they are in a single thread. Let's take a look at three functions for creating and manipulating a timer. var id = setTimeout(fn, delay);-Initializes a single timer, and the timer will invoke the specified function after a certain dela

JavaScript in the URLThe URL followed by a javascript: protocol qualifier, is a way to embed JavaScript code into the client. This particular protocol type specifies that the URL content is any string, which is the JavaScript code that will be run by the JavaScript parser. I

The setTimeout and setInterval of JavaScript are two methods that can easily fool others' feelings, because we often start to think that the call will be executed in the established way. I think many people share the same feeling. For example The Code is as follows: SetTimeout (function (){Alert ('Hello! ');}, 0 );SetInterval (callbackfunctions, 100 ); It is assumed that the greeting method in setTimeout will be executed immediately, because it is

1. What is JavaScript? Javascript is a scripting language based on object and event-driven with secure performance. It is used to link multiple objects on a web page with HTML hypertext markup language and Java scripting language (Java applet) to interact with Web customers, this allows you to develop client applications. It is implemented through embedding or calling in a standard HTML language. Its appea

Main introduction: JavaScript reinforcement tutorial-JavaScript operator JavaScript Arithmetic Operator this article is an official HTML5 training tutorial for H5EDU institutions, mainly about: JavaScript reinforcement tutorial-JavaScript Operator

Almost every developer has development experience in object-oriented languages (such as C ++, C #, and Java. In traditional object-oriented languages, there are two very important concepts: classes and instances. Object-oriented and Object-basedAlmost every developer has development experience in object-oriented languages (such as C ++, C #, and Java. In traditional object-oriented languages, there are two very important concepts: classes and instances. Class defines the common behaviors and met

Understanding javascript prototype and closure (16)-conclusion and understanding javascript I used a total of 15 articles to prototype and closure javascript. First, javascript is "not easy to learn ". It is not how difficult it is, but the people who learn it often learn javascrip