JavaScript

This article will introduce JavaScript inheritance-prototype chain inheritance and class inheritance. If you have any need, what is inheritance? A: The process that others give you is inheritance. Why inherit? A: click it. Well, since everyone

The "& amp;" operator can be understood at three different levels. Operators can be understood at three different levels. Level 1 Understanding When the operands are boolean values, "&" performs the Boolean AND (AND) operations on the two values.

The src attribute of the script element can be used to set the URL and initiate an HTTPGET request to implement the script operation. HTTP supports cross-origin communication without restriction and the same-origin policy. Next, we will introduce

If you do not know about deferred in jQuery, the following section describes how to asynchronously load JS files from the deferred object, if you are interested, you can refer to the following explanation of jQuery's deferred object by referring to

How is jQuery implemented by chained operations? Why do I need to perform chained operations? We will help you solve these two problems. If you are interested, you can understand them. Two Problems 1. How does jQuery perform chained operations? 2

This article introduces in detail some small details about the performance in Web development. Starting with JavaScript itself, it introduces some functions and programming rules to be avoided in JavaScript, for example, eval's drawbacks:

After some technical documents from google, I found that firefox supports a native bind method, which satisfies our original intention well. The call method is the same as the call and apply method, but after the definition is complete, this method

Today, we need to draw a graph on the web page, think of JS, learn, and search online, and sort and optimize the following code. Note that we use pure js instead of HTML5 canvas, you can refer to the following code to draw a graph on the web page,

This article describes how jQuery operates the Cookie plug-in. For more information, see the following code: The Code is as follows: JQuery. cookie = function (name, value, options ){If (typeof value! = 'Undefined') {// name and value given, set

There are many slide effects of switching images on the webpage. They are mostly implemented in flash. Can javascript implement them? Of course, I wrote one myself, for more information about how to switch between images on the webpage, see the

This article will introduce the case applications of javascript constructor calls. For more information, see the following constructor definition: The Code is as follows: Var Coder = function (nick ){This. nick = nick;}; After the constructor is

During work, many friends often use js to determine whether the client is a PC or a handheld device. The following methods are provided today. If you need them, refer to the following methods during work, many friends often use js to determine

Obtain the div editing box, textarea, and inputtext. The cursor position is compatible with the IE, FF, and Chrome methods. If you have any need, you can refer to the online solution for 2 hours, but it is not compatible with FF, it seems that this

The document attribute is created as a child object of the window object and is used to access all elements on the page, it is easy to learn about the attributes, methods, and events of the zookeeper Doc ument in javascript. if you need it, please

Most JavaScript programmers know that strict equality () should be used to replace "normal" equal operations (). however, sometimes you really need an operator that is stricter than strict equality. For example, when you want to check whether a

This article mainly describes the methods of colialization and anti-colialization of this in JavaScript. the topic is from a tweet of BrendanEich (father of JavaScript). this article mainly describes how to commercialize this in JavaScript. the

JavaScript has five simple data types (also known as basic data types): Undefined, Null, Boolean, Number, and String. There is also a complex data type-Object, which is essentially a data type consisting of a group of unordered name-value

In the Code logic, more is the method of associating arrays. Even so, we seldom use the object type as the key name of the key-value pair. For more information about JSON objects, see wikipedia (http://zh.wikipedia.org/zh-cn/JSON) and the official

By default, bubbles appear on the top of the trigger object. When the trigger object is on the edge, some of the bubbles appear in the code comments outside the window as detailed as possible. No major bugs have been found in preliminary tests. In

Before introducing how to extend jQuery, let's take a rough look at jQuery source code (take Version 1.3.2 as an example ). The main body of jQuery is as follows: (Function (){......}) (); It is strange for people with poor Javascript basics. In