JavaScript

The prototype attribute of the object in JavaScript, which can return the reference of the Object Type prototype. This is a pretty straightforward explanation. To understand it, you must first correctly understand the concepts of object types and

We are very grateful to the following contributors (Contributors), They provide a lot of patches for this release (Patches):Antonkovalyov, Csnover, danheberden, David Murdoch, dmethvin, gnarf37, jaubourg, jeresig, jitter, jrburke, lrbabe,

Nested Functions]JavaScript allows embedded functions that can be used as data. Under the function lexical scope, it can generate an astonishing difference from the traditional object-oriented language.First, JavaScript Functions use lexical

  Obtains the value of a set of radio selected items. Var item = $ ('input [@ name = items] [@ checked] '). val (); Obtain the text of the selected select item. Var item = $ ("select [@ name = items] option [@ selected]"). text (); The second

Publish an efficient JavaScript analysis and compression tool JavaScript AnalyserA script compression example is provided to show the JSA syntax compression and optimization functions.Copy codeThe Code is as follows:Try {// Xxxx ();}Catch (e ){Yyyy (

The website wants to be revised. There is an advertisement problem. In the past, every time I put an advertisement, I had to update all the articles on the site. This is inconvenient and bad! I have changed some of the previously recommended

DescriptionReturns a list of software that was installed on a computer using Windows Installer. This information is then written to a text file. Script CodeCopy codeThe Code is as follows:Var wbemFlagReturnImmediately = 0x10;Var wbemFlagForwardOnly =

DescriptionReturns a list of features for all the software installed on a computer using Windows Installer. Script CodeCopy codeThe Code is as follows:Var wbemFlagReturnImmediately = 0x10;Var wbemFlagForwardOnly = 0x20;Var ob1_miservice = GetObject (

Recently, I made an image auto-scaling effect and found that the JavaScript code that has been used is abnormal in firefox, resulting in page deformation. so I wrote a general compatibility code for you to discuss.I used pjblogCopy codeThe Code is

When you enter AutoComplete, you can give a prompt based on the user input. The data source can be local or remote. The DataSource of AutoComplete can use a Function. In this article, we use JSONP to query the Function.When the data source is

untitled document [Ctrl + A select all Note: If you need to introduce external Js, You need to refresh it to execute]Haha, when I was doing a website, I wrote a simulated filter image that gradually showed up. If I had such a post, please

Two days ago, I studied the line feed rule of textarea, which is quite complicated:How to obtain the intuitive line depends not only on the cols size, but also on the webpage encoding method.Cols = "30" textarea, in fact, each line can contain 29

Javascript random colors are used in many places: for example, many tag connections are colorful. That's all we need. Start as follows: There are two methods in total.One is to prepare a set of beautiful candidate colors, and the other is to

There have been a lot of things recently, and I haven't been here to write whimsical things for a long time. But this morning I thought of something interesting, so it took me half an hour to think about it. By the way, let's share it. When the

When many pages need to be displayed, many of us use paging.Sometimes, the paging effect is very annoying. Scroll bars are a simple and efficient method. Here, considering the user experience, I use Jquery to achieve a effect similar to "rolling

The first and second parts of this series Introduce the prototype and theoretical concepts of Javascript modules. Today we will introduce how to apply them in practice.I am using a very popular library require. js. 1. Why use require. js?At the

1. Non-logical The logic is not used! It can apply any type of value with ECMAScript. A boolean value (true/false) is returned for a logical non-operation ). This operator first converts its operands to a Boolean value and then reverse it.The

Introduction Jqplot is a very good jquery-based chart plug-in. This article mainly helps you sort out the Chinese usage instructions of jqplot and download online examples and source code. The jqplot plug-in displays charts on the canvas in

5. asynchronous queue Deferred5.1 OverviewAsynchronous queue is a chained object that enhances the management and calling of callback functions for processing asynchronous tasks.Asynchronous queues have three statuses: initialization (unresolved),

JavaScript objects have almost no similarities with traditional object-oriented objects. In traditional object-oriented languages, creating an object must first have an object template: class, class defines the attributes of the object and the