JavaScript

A few days ago saw an article mentioned mean this word, what is mean? In fact, MENA is the abbreviation for the MongoDB (non relational database) + Express (template engine) + Angularjs (MVC JavaScript Library) + Nodejs (server script). Together,

Do you know the value of alert following JavaScript execution? var foo = 1; function Bar () { if (!foo) { var foo =; alert (foo); } Bar (); If you're surprised by the result of "10," you might want to take a good look at this article: var a =

Each programming language, its variables have a certain range of valid, beyond this range, the variable is invalid, which is the scope of the variable. From the point of view of mathematics, it is the field of the independent variable. Scopes are

We know that although JavaScript is an object-based (object-based) language. But using its prototype (prototype) feature, we can fully implement the very sexy OO framework, which can be seen in the Classic forum article ' essentially JavaScript OOP (

1, what is IPV6? This problem can go to Baidu or Google find, there should be a great harvest, in fact, is mainly to solve the problem of IPV4 address, V4 address is 32, that is: 192.168.1.1, and V6 address is 128, than the V4 enlarged too many

Javascript| Array JavaScript truncating an array by setting the length property of an array is the only one by one way to shorten the length of an array. If you use the delete operator to delete elements in an array, the length property of

javascript| Tutorial Using OLE Automation in JavaScript 5. How to handle an instance of an application A document template is a connection between an application and the document it supports. There are two types of document templates: a single

Article Introduction: 25 useful JavaScript libraries that simplify Web developers ' complex tasks. In web development, in order to create a compelling dynamic Web site, developers often need to use complex programming to achieve some

Xml My XML file is login.xml as follows.Now I need to manipulate the contents of this XML file.First of all, we need to load this XML file, JS load XML file, is through the XMLDOM.Load XML documentLoadxml = function (xmlFile){var xmldoc;if (window.

Unary operatorAn operator that can manipulate only one value is called a unary operator. The unary operator is the simplest operator in ECMAScript.1. Increment and decrement operatorsThe increment and decrement operators draw directly from C, and

Scopes are one of the most important concepts of JavaScript, and to learn JavaScript you need to understand how JavaScript scopes and scope chains work. Today's article provides a simple introduction to JavaScript scopes and scope chains, hoping to

The scope of a variableTo understand closures, you must first understand the special variable scope of JavaScript.The scope of a variable is nothing more than two kinds: global variables and local variables.The special point of the JavaScript

Game of LifeAccording to the Wikipedia's article: "The Game of Life, also known simply as Life, was a cellular automaton devised by the British mathematician John Horton Conway in 1970. "Given a board with m - n cells, each cell have an initial

Through JS or JQuery to get to the element, through Offsetleft, OffsetTop, offsetwidth, offsetheight can get the position and size of elements, very simple, directly on the source, please see!1 /**2 * Get element position by jquery, and return

About JavaScript browser objects and javascript Window The window object not only acts as a global scope, but also represents a browser window. The window object has the innerWidth and innerHeight attributes to obtain the internal width and height

Jquery plug-in jquery. dragscale. js implements the drag and drop method to change the element size (with demo source code download), jquery drag and drop drag This document describes how to drag and drop jquery. dragscale. js to change the element

Implementation principle of the wysiwyg html editor  Implementation principle of the wysiwyg html editor This article mainly introduces how the wysiwyg html editor works, this article describes the basic implementation principles of the online

Summary of JavaScript objects, javascript objects Summary of Javascript objects: JavaScript objects can be seen as unordered sets of attributes. Each attribute is a key-Value Pair and can be added or deleted. All things in JavaScript are objects:

The advantages and disadvantages of the two methods for creating closures in JavaScript and the advantages and disadvantages of javascript There are usually two common methods for creating closures in JavaScript. Constructor method: New function (

In the tutorial of using the logarithm Math. log () method in JavaScript, javascriptmath. log This method returns the natural logarithm of a number (the base number is E ). If the number value is negative, the return value is always