在正式开始学习之前，有些准备工作要做。在这一章里将不会介绍Javascr ipt的任何编程方面的知识，但是这一章是必不可少的。我们主要讨论下面的几个问题：



Internet的历史与现状

WWW与Internet的联系

什么是HTML

为什么要在HTML中加入Javascr ipt

Javascr ipt的优点

-Before the formal start learning some preparatory work to be done. In this chapter will not introduce any Javascr ipt programming knowledge, but this chapter is essential. We mainly discuss the following issues:



The history and status of Internet

WWW and Internet links

What is HTML

Why add the Javascr ipt in HTML

The advantages of Javascr ipt