Javascript is a scripting language produced by Netscape for use within HTML Web pages. JavaScript is loosely based on Java and it is built into all the major modern browsers. This tutorial gives an initial push to start you with Javascript.
JavaScript is:
JavaScript is a lightweight, interpreted programming language Designed for creating network-centric applications Complementary to and integrated with Java Complementary to and integrated with HTML Open and cross-platform
A JavaScript consists of JavaScript statements that are placed within the
<script>... </script>
HTML tags in a web page.
You can place the <script>tag containing your JavaScript anywhere within you web page but it
is preferred way to keep it within the <head> tags.
The <script> tag alert the browser program to begin interpreting all the text between these
tags as a script.
Your First JavaScript Script: Let us write our class example to print out "Hello World".
<html>
<body>
<script language="javascript" type="text/javascript">
<!--
document.write("Hello World!")
//-->
</script>
</body>
</html>
Above code will display following result: Hello World!