null function

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JQuery Ligerui Plug-in Ligertree usage and introduction

One, Introduction   Ligertree List of features: 1, support local data and server data (configuration data or URL) 2, support native HTML spanning tree 3, support dynamic access to add/modify/delete nodes

Socket multi-person Chat program C language version (ii) _c language

Socket multi-person Chat program C language version (i) Address: http://www.jb51.net/article/94938.htm The 1v1 is realized, and the 1V is much easier. However, relative to the 1V1 program, I have undergone a major change, the use of linked lists to

Analysis of callback and code design patterns in Node.js asynchronous programming _node.js

Nodejs's biggest selling point-event mechanism and asynchronous IO-is not transparent to developers. Developers need to write code asynchronously to use this selling point, which has also been criticized by some Nodejs opponents. But in any case,

A PDO-based database operation class (new) A PDO transaction instance _php technique

Copy Code code as follows: /* * Author: Hu Rui * Date: 2011/03/19 * Email: hooray0905@foxmail.com * * 20110319 * Commonly used database operations, such as: Add or delete, get a single record, multiple records, return to the latest

To read and write XML DOM implementation code in PHP

Reading and writing Extensible Markup Language (XML) in PHP may seem a bit scary. In fact, XML and all of its related technologies may be scary, but reading and writing XML in PHP is not necessarily a scary task. First, you need to learn a little

div drop-down menu (i)

Menu | dropdown script> var cm=null; Document.onclick = new Function (' Show (null) ') function GetPos (el,sprop) {var IPos = 0 while (el!=null) {ipos+=el["offset "+ Sprop] el = el.offsetparent} return IPos} function show (el,m) {if (m)

JS implement CSS style selector (2KB after compression) _javascript tips

Recently in doing some OA front-end interface, in order to better manage the page code to write a JS selector, write written to find very laborious, simply looking for a look on the Internet, Kung Fu, find a mini CSS selector, and performance

PHP Read XML method (Iconv solve Chinese garbled problem)

The output is in the following statement: Echo iconv ("UTF-8", "GBK", $Song _url); Solve Chinese garbled problem A The first is the coding of PHP pages 1. php file itself and the encoding of the Web page should match A. If you want to use gb2312

The difference between settimeout and setinterval

The Window object has two main timing methods, settimeout and Setinteval, whose syntax is essentially the same, but the completed functionality differs. The SetTimeout method is the timer program, which is what to do after the time. Just finish it.

Tip: Implement multiple CSS stylesheet switches on the same Web page

css| Tips | web | Style sheet styles and data separation bring more than just the standard, and since the style is separated from the data, the style switch is taken for granted! But there are so few Chinese tutorials on the internet! So I collected

JAVA: Database Operations Encapsulation

Encapsulation | data | database package creator.common.db; Import Java.io.InputStream; Import java.sql.*; Import javax.sql.*; Import javax.naming.*; /** * * Title:dbBean.java * description: * copyright:copyright (c) 2004 * company: * @author

A PDO-based database operation class (new) a PDO transaction instance

Copy CodeThe code is as follows: /* * Author: Hu Rui * Date: 2011/03/19 * Email: hooray0905@foxmail.com * * 20110319 * Commonly used database operations, such as: Add or delete, get a single record, multiple records, return to the latest Insert

Javase Basics of JDBC

Javase Basics of JDBC1. JDBC Steps:① load Database driver;A.mysql:com.mysql.jdbc.driver;B.sqlserver:com.microsoft.jdbc.sqlserver.sqlserverdriver;C.oracle:oracle.jdbc.driver.oracledriver;② get Database

Ajax checks whether the user name is occupied

Copy codeThe Code is as follows:// Check whether the user name is occupiedFunction GetO (){Var ajax = false;Try {Ajax = new ActiveXObject ("Msxml2.XMLHTTP ");} Catch (e ){Try {Ajax = new ActiveXObject ("Microsoft. XMLHTTP ");} Catch (E ){Ajax =

Javascript implementation css style selector (2 kb after compression) _ javascript skills

Recently I am working on some front-end OA interfaces. In order to better manage the Page code, I want to write a js selector, which says it is very laborious to find it on the Internet. I am very hard to find a minicss selector, and the performance

Brief Introduction to constant speed and variable speed (buffer) Movements in JavaScript

The movement of a div is actually a change in the distance between it and the browser border. If the speed of his change is certain, it is the constant speed. If the speed of the change is not certain, it is the variable speed. The movement of p is

Javascript + XMLHttpRequest + asp.net: No need to read database data _ javascript skills

Javascript + XMLHttpRequest + asp.net does not need to read database data. The Code is as follows: /**//// /// Generate a node with CDATA/// /// XmlDocument /// Element name /// CDATA Value /// XmlElement Public static XmlElement

Common JavaScript function_javascript skills

Returns the byte length of the string. Check whether the form complies with the specified length. Expression verification function // function name: strByteLength // Function Description: returns the length of a string in bytes. // Parameter

ColorPicker, IE, Firefox, Opera, Safar_javascript

The color selector ColorPicker. For more information, see. From: color selector

PHP-Determine if the variable is empty

Solution Objective: determine if a variable is empty This article has compiled some commonly used in PHP, the judgment variable is empty method, shares to everybody.1,isset function : Determine whether the variable is initializedDescription:

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