JavaScript

A JavaScript is a nested scripting language! is a weakly typed language, and its interpreter is called the JavaScript engine and is part of the browser! The first is put in HTML to the Web page dynamic function of the whole page!JavaScript is a

JavaScript get scrollbar height + Common JS page width and heightJS (1)/********************* Take window scroll bar height******************/function Getscrolltop (){var scrolltop=0;if

Preface The purpose of this article is to see often developers say: the string into a JSON object, the JSON object into a string and other similar topics, so the previous collection of a foreigner's article collation translated for everyone to

Preface This chapter is to explain the s.o.l.i.d Five principles of JavaScript implementation of the 5th, the dependency inversion principle LSP (the Dependency inversion Principle). English Original: http://freshbrewedcode.com/derekgreer/2012/01/22/

Foreword When you learn JavaScript, often encounter self-executing anonymous function code, today we mainly think about the self-implementation. Before learning more about this, let's talk about the "self-implementation" of the term, this article is

Introduction Agent, as the name implies is to help others work, GOF the proxy mode is defined as follows: Proxy mode, for other objects to provide a proxy to control access to this object. The proxy mode enables the proxy object to control

introduces the mediator pattern (mediator), which encapsulates a series of object interactions with a mediation object. The mediator makes the objects not need to explicitly reference each other, so that they are loosely coupled, and can

Brief introductionJavaScript allocates memory when variables (objects, strings, and so on) are created, and then "automatically" releases them when they are no longer in use. The latter is known as garbage collection . The word "auto" is confusing,

introduces decorators to provide more resilient alternatives than inheritance. Decorators use objects for wrapping the same interface not only to allow you to add behavior to the method, but also to set the method to the original object invocation

What is cross-domain?Concept: As long as the protocol, domain names, ports are any different, are treated as a different domain.URL description whether to allow traffic to http:Www.a.com/a.jshttp://www.a.com/b.js the same domain allows

Some of JavaScript's points of knowledge:1. The five most popular browsers: Chrome,firefox,safari,ie,opera2. A simplified version of how the browser works:3.Js by Ecmajavascript;dom; BOM composition;4.js is a weakly typed language (that is, it

1 DOCTYPE HTML>2 HTML>3 Head>4 MetaCharSet= "UTF-8">5 title>innerHTML Exampletitle>6 Head>7 Body>8 spanID= "Spanid">haha hehespan>9 Scripttype= "Text/javascript">Ten

　　The concept of JS inheritancejsThe following two ways of inheriting are commonly used:原型链继承（对象间的继承）类式继承（构造函数间的继承）Because js unlike the java real object-oriented language, which is js object-based, it does not have the concept of a class. Therefore,

JavaScript Basics 031. Arithmetic operatorsPost Increment/decrement operator + +,--comparison operator (=, logical operators (&&, | |,!)Comparison of stringsThe string is sized by the code point of the character in Unicode and compares the size from

introducing this article is the next chapter in the pattern of creating objects, using a variety of techniques to greatly avoid errors or to write very thin Code. Mode 6: function syntax sugar function syntax sugar is an extension of the method

HTML 5 Web storage and htmlweb StorageStore data on the client HTML5 provides two new methods to store data on the client: LocalStorage-data storage with no time limit SessionStorage-data storage for a session Previously, these are all completed

New Attributes and usage of CSS3, and new attribute usage of CSS3 Nowadays, with the popularity of Web2.0 technology, the previous CSS2 standards and related technologies seem to be unable to meet the increasing development needs: people need to

Vuejs Article 8-definition instance parsing of Vuejs components, vuejs Article 8 This document provides a more detailed and secure code reference for beginners. This document is used in official

Vue form instance code and vue form instance What is Vue. js? Vue. js is a library used to build interactive Web interfaces. Vue. js provides MVVM data binding and a composable component system with simple and flexible APIs. Vue. js features Concise:

Details about scopes, extensions, and closures that are most confusing in JavaScript (recommended) and details about javascript I. Function Scope 1. Function Scope It means that the scope is in a "Function", and all variables belonging to this