null function

I. Usage of settimeout and setinterval (http://www.css88.com/archives/5804)SetTimeout is a timeout call, and JavaScript is a single-threaded parser, so only a piece of code can be executed within a certain amount of time; the second parameter of

When the start of the following error occurred in the exception, do you know what the problem? PHP Fatal Error:call to a member function getparams () on null in/users/hundredlee/chatroom/apps/ctrl/main/main.php on Li NE 29 Fatal Error:call to a

I. Function creation processBefore learning about the prototype chain, let's take a look at what a function does during creation. Let's take an example of an empty function:Function (){};When we declare such an empty function in the code, the

Using FusionCharts in php author: the zccst data formats include setDataURL (srcUrl) and setJSONData (jsonStr. In actual needs, it is quite convenient to directly refer to official materials. FileUrl..pathtoxx.swf; & nbsp; swf file path & nbsp; use

I have already written a PDO database operation class. this time I only modified it on the basis of the previous one. The code is as follows: /** Author: Hu Rui* Date: 2011/03/19* Email: hooray0905@foxmail.com** 20110319* Common database

PHP 5 ways to determine if an array is empty 1. isset function: Determine whether the variable is initialized Description: It does not determine if the variable is empty and can be used to determine if the element in the array has been

JavaScript Document var xmlHttp; function S_xmlhttprequest () { Xmlhttp=null; if (window. XMLHttpRequest) {//code for IE7, Firefox, Opera, etc. Xmlhttp=new XMLHttpRequest (); } else if (window.

Using FusionCharts in php author: the zccst data formats include setDataURL (srcUrl) and setJSONData (jsonStr. In actual needs, it is quite convenient to directly refer to official materials. FileUrl..pathtoxx.swf; & nbsp; swf file path & nbsp; s

An object becomes observability by adding a method (This method allows another object, that is, the observer registers itself. When an observed object changes, the message is sent to the registered observer. This article introduces the Observer

REPRODUCE THE PROBLEM Now we will write an example to reproduce the problem of asynchronous email refresh. First, we create a generic handler named "scripthandler. ashx" to simulate a script file. It can be seen that loading such a script file

Why does. net need to call BAPI_TRANSACTION_COMMIT to call SAP's BAPI? First, you must understand the role of the BAPI "BAPI_TRANSACTION_COMMIT. It has a lot of credit. Many bapis in SAP do not have any results for direct calls, because a COMMIT is

# The region provincial/municipal linkage drop-down box is based on: JS + XMLHTTPScript Language = "JavaScript">Function showprovince (listobj ){VaR xmldoc = new activexobject ("MSXML. domdocument ");Xmldoc. async = falseXmldoc. Load ('area. xml

Operation cookie by javascript: cookie Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> Function getcookie (c_name) { If (document. Cookie. length> 0) { C_start = Document. Cookie. indexof (c_name +

1. About anonymous classes VaR class1 = {p1: value1, P2: value2 }; This can also be written VaR class1 = {}; Class1.p1 = value1; Class1.p2 = value2; First, all anonymous classes are inherited from the core object. var class1 ={} means that an

I read "talking about JS object-oriented programming" a few days ago. At that time, I asked haoshen to findArticleIn some cases, it may be misleading (or different from ECMA). Later I flipped through ECMA and finally found the "standard ......This

ASPX page: "); Return false ;'Onmouseover = 'showtip2 (this, poptip, "Song name: "+ " album: "+ " ARTIST: "+ " clicks: "+ "& Nbsp; | & nbsp; Star"+ " added by: "+ " Add time: ")'Onmouseout = "hidetip (this, poptip, event)"> ++ ++The following is

Today, we are going to create a flash chat room, learn how to use the socket class, use Java as the background, and develop a multi-user chat program in the C/S architecture. First, design the user interface.I. Interface Design All the interface

Typical Summary of various javascript problems about motion, and typical Summary of javascript This example summarizes various javascript problems about motion. Share it with you for your reference. The details are as follows: I. JS movement

PHP design pattern: Observer Pattern example, php design pattern observer First, understand the concept of observer mode: an object is made observability by adding a method (This method allows another object, that is, the observer registers himself.

Make your javascript functions have the memory function, reduce the use of global variables, javascript global variables Consider the following scenario: if we need to draw a circle on the interface, the interface is blank at the beginning; when the