JavaScript

1, Pre-interpretation (variable promotion): In the current scope, before the JS code execution, the browser will first put all the Var and function keyword in advance declaration or definitionvar num = 12;Statement (DECLARE): Var num; --no

Function.prototype.method=function (Name,func) {This.prototype[name]=func;return this;}1. Note It is best to use a double slash instead of a * slash/*2. Number, JS does not distinguish between integer types, 1 and 1.0 are equal* Nan is a numeric

Javascript function is ubiquitous and powerful! JavaScript functions allow JS to have some object-oriented features, such as encapsulation, inheritance, and so on, can also be used to reuse code. But there are two sides to things, JavaScript

JS (JavaScript)first, the history story of JavaScript1. The origin of JavaScript language and name (Netscape,Sun Java)2. Microsoft's Explorer and JScriptsecond, JavaScript overview JavaScript a literal-translation scripting language is a dynamic

For a description of the prototype property, cite the article: http://www.cnblogs.com/dolphinX/p/3286177.html1. What is the prototype chain?Prototypes have a pointer to a constructorWhat if we let the subclass prototype object be equal to another

first, the question of the proposedLet's take a look at the following pieces of code, and note that the following code does not run in the browser's developer tools (such as Firebug, Chrome Developer tool), as explained later:Why we can delete the

Create a welcome cookie.With the w3s document learning, the JavaScript Cookie Welcome page is finally expanded. Share your own cookie learning experience here. , I hope to be helpful to everyone. I'm not here to explain all the official explanations

Background analysisFirst look at a section of JS code, the main implementation of the addition of the first time through the asynchronous request to determine whether the existence, if not exist, in the add operation:function add(url,data) { var

[0]6 type of data :[0.1] Basic data type: Undefined, Null, Boolean, number, String[0.1.1] Basic type value refers to simple data segments, 5 basic types are accessed by value, because you can manipulate the actual values saved in the variableThe

Debugging page styles or scripts with Firebug and Chrome-devtoolbar is a daily must-do for front-end development. What kind of magical help can this development artifact bring us? These days to see some of the information to give me inspiration, can

How to add json data to js arrays and the difference between js arrays and json, jsjson JSON (JavaScript Object Notation) is a lightweight data exchange format, using a completely language-independent text format, JSON is the JavaScript native data

JS responds to the mouse and click to implement the drag effect between two slider ranges. js mouse clicks This article describes the code for dragging between two slider ranges implemented by JS. We will share this with you for your reference. The

JS five-star gift effect code based on VML technology, vml gift The example in this article describes the five-star gift effect code of JS Based on VML technology. We will share this with you for your reference. The details are as follows: The

JavaScript -- Item10 closure (closure) that you don't know)What is JavaScript closure? After using JavaScript for more than a year, the closure is always confusing. I have been familiar with some closures and made several mistakes due to my

Code of the vertical folding menu implemented by JS, And the js vertical folding menu This article describes the vertical folding menu Code implemented by JS. We will share this with you for your reference. The details are as follows: Let's take a

Mobile device drawing and JavaScript unlocking with pure javascript code There is a screen-Unlocking app on mobile phone devices, which is familiar to everyone. on mobile devices, users can lock the device's user interface by setting a lock pattern

Jquery implements simple and practical pop-up Layer Effect code, and jquery is simple and practical This article describes the simple and practical implementation of jquery in the pop-up layer. Share it with you for your reference. The details are

What are the differences between children and find in jquery?1. children syntax in Jquery. children (selector) indicates that expr is an expression and an optional parameter. All the expressions in the selector can be used here, for example, by Tag

Center negative margin, center margin new document

CSS3 Study Notes (5)-page mask effect, css3 Study Notes Today, I will release the page mask effect. Previously, the masks were implemented in JS. Suddenly, I found that the box-shadow attribute in CSS3 is not only used for stereoscopic shadow, you