JavaScript

I. debugging tools1. firebug2. Web Developer toolbar-adjust the details of the page3. ie developer toolbar -- debug HTML and CSS of IE4. companion. JS -- debug JavaScript of IE5. fiddler-web debugging proxy, which records all HTTP (s) requests from

Event If (Window. addeventlistener) {//Mozilla, Netscape, FirefoxWMP. addeventlistener ("Playstatechange", Playstatechange,False);} Else ... {//IEWMP. attachevent ("Playstatechange", Playstatechange );} Play: mediaplayer. Play () Pause:

True and false values All values in javascript can be implicitly converted to the boolean type. In condition determination, the following values are automatically converted to false: Null, undefined, Nan, 0, '', false Therefore, you do not need

Introduction This article mainly describes how to create objects. using various techniques, you can avoid errors or write very compact objects.Code. Mode 1: namespace) The namespace can reduce the number of global names required to avoid name

      Introduction: The javascript design pattern is turing Publishing. in learning, I want to focus on every chapter. Question: 1.1Javascript flexibility Object-oriented JavaScript programming mode: 1. Saving state 2. methods that

I have been studying the DOM (Document Object Model) in Javascript recently. Of course, it cannot be said that it is a study. At most, it is just a study. It is not very difficult to understand the logic Syntax of Dom, it is only possible that some

I picked a post titled common JavaScript functions from the Internet two days ago, which contains verification functions that are commonly used on the client, however, all the functions in it use the string Decomposition Method for

Clear For (VAR I = Document. getelementbyid ('group'). Options. Length-1; I> = 0; I --){Document. getelementbyid ('group'). Options. Remove (I );} OrDocument. getelementbyid ("group"). innerhtml = ""; AddFor (VAR I = 0; I VaR ooption = Document.

Javascript is an interpreted object-based and event-drivenProgramDesign Language. In terms of syntax composition, its core language is similar to C, C ++, and Java, but it is a weak type language, and its variables do not have to have a clear type.

I explained how to use this in JavaScript to a friend two days ago. I said that I should pay attention to the context of this, but I cannot understand it. Alas, I don't blame him. This in Javascript is sometimes very worrying, and even those of us

A greedy snake written a few years ago was once bored and changed to various versions, including QT, C #, JavaScript .... it's boring. why is it fun to write greedy snakes? haha.CodeDownload: Click to download 1. the game has ten levels, and the

Zhuanzi: http://qingbob.com/blog/%E8%B0%88javascript%E5%8F%98%E9%87%8F%E5%A3%B0%E6%98%8E I encountered an interview question in my previous interview. VaRA=10;(Function(){Console.Log(A);VaRA=20;})() Just 5 linesCodeWhat is the log result?

Introduction Uncle Shouji (19) posted yesterday: Do you really understand JavaScript? There are a lot of answers to the five questions in it. I found that there are still many strong people, and many people have all answered correctly. Today, we

Preface In the description of the variable object in Chapter 12th, we already know that the data of the execution context (variables, function declarations, and function parameters) are stored in the variable object as attributes. At the same

Introduction The chain of responsibility enables multiple objects to process requests, so as to avoid coupling between request senders and recipients. Connect the object to a chain and pass the request along the chain until an object processes it.

Can JavaScript access the client's SQL database? Yes! (Access a client side MSSQL database by JavaScript) Can JavaScript access the client's SQL database? Yes! Really!   Requirements: SQL Server2000 (not tested in other versions), and WMI

In IE6, only a is supported: hover pseudo class, and other labels are not supported, which is a headache. However, CSS hover. HTC can solve the hover compatibility problem of IE6. It uses the Javascript script to define the style of the element.

Onkeyup = "this. value = this. value. replace (/[^ a-z _-]/g,'') "// only English letters and _ and-can be entered- Onkeyup = "value = value. replace (/[^ \ u4E00-\ u9FA5]/g,'') "// only Chinese characters can be entered Onkeyup = "if (isNaN (value)

1. window object2. Same-source security policy3. cookie The browser Object Model (BOM) is a set of objects inherited from the browser context, which is also the context of function running in most JavaScript applications. Sometimes it is also called

Next we will go on journey 8 to continue our JavaScript Dom journey 9. In this blog, we mainly talk about the form object, the differences between different browsers when writing JavaScript code, and some knowledge points about using regular