Javascript Undefined Object

JQuery is a http://www.aliyun.com/zixun/aggregation/33906.html ">javascript library." JQuery greatly simplifies JavaScript programming. It helps simplify JavaScript™ and asynchronous JavaScript + XML (Ajax) programming. Unlike JavaScript libraries like this, jqu ...

CSS browser compatibility is sometimes a headache, perhaps when you understand the skills and principles, you will find it is not difficult, from the online collection of ie7,6 and FIREOFX compatibility processing methods and collated. For web2.0 excesses, try to write code in XHTML format,  and doctype affect CSS processing, as the standard of the consortium, must add DOCTYPE reputation. CSS Tips 1.div Vertical center problem vertical-align:middle ...

One months ago, I was asked what is functional programming? Although familiar with some of the concept of functional programming, the Little Schemer bought from Canada six months ago also read the previous chapters, that day is not able to answer what is functional programming. Functional programming is a strange field for programmers familiar with procedural programming, and concepts such as closures (closure), continuations (continuation), and currying are a nightmare for programmers with procedural programming. Without u ...

As one of the three logic control structures of program language, loop is often encountered in actual development. We often encounter this application in the use of the looping structure of JavaScript programs. 　　Loops on the length of an object and processes each element of the object. such as the for (Var i=0;i<a.length;i++) {Sum+=a[i]} is just a simple example, and many program developers have studied questions about the efficiency of their execution as a program. So there are the following two ...

I want to dizzy, in the end I want to listen to whom? In the web development world, PHP is one of the most popular languages, and from PHP you can easily find the script you need. Unfortunately, few people use "best practices" to write a PHP program. Here, we introduce PHP 10 best practices, of course, each one is proven by masters derived. 1. Use PHP at the right time - Rasmus Lerdorf No one better than PHP creator Rasmus Lerdorf understands that PHP is used in ...