What is JavaScript?
So what exactly is JavaScript? Well, it's is a scripting language developed by Netscape to
add interactivity and power to web documents. Examples of JavaScript include live clocks,
rollover effects, scrollers, form validations, and so on. JavaScript differs from most
other programming languages in that it is relatively easy to master, even for people who
have absolutely no programming experiences whatsoever.
Why learn JavaScript?
The first few words that come to mind are: "Freedom baby, freedom!" With html,
you are restricted to creating static, non interactive webpages. This, in today's internet
standards, is unacceptable. With JavaScript, you can change that. Imagine being able to
break free and allow your creativity to dictate what you put on your webpage, instead of
the other way round. And the best part is, JavaScript can be learned by anyone-yes, I said
anyone!
What's the difference between Java and JavaScript?
Java is completely different from JavaScript-It's a lot more powerful, more complex, and
unfortunately, a lot harder to master. It belongs in the same league as C, C++, and other
more complex languages. Also, you need to compile a Java program before you can run it,
whereas with JavaScript, no compilation is needed-simply open up a text editor, type it,
save it, and your browser is ready to run it!
Can my JavaScript programs run on both Netscape and Internet Explorer browsers?
Unfortunately, not necessarily. JavaScript was created by Netscape, so it is most
compatible with Netscape. Internet Explorer 4.x supports 99% of what JavaScript has to
offer, although IE 3.x is not quite as adorable. A good rule to follow is to always test
your codes using both browsers before uploading it onto the internet. You will be
surprised how many websites fail to do this, annoying surfers and not even realizing that
their scripts are going haywire behind their backs! (this might pertain to me too)
- Tutorial introduction
- Getting Started: Setting Up your code
- Introducing objects-what JavaScript's made of
- Using the document object to explain objects
- Functions and creating your own functions
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