JavaScript Introduction
- JavaScript was designed by Netscape Corporation.
- JavaScript is used to perform calculations, check forms, write I nteractive games, add special effects, customize graphics selections, create security passwords and more
- JavaScript is a lightweight interpreted programming language with elementary object-oriented capabilities
- Javascript can easily create interactive webpages
- JavaScript is an interpreted language (means that scripts execute without preliminary compilation)
- Some people says that JavaScript is Java because of similar name, it is not true, JavaScript is product of Netscape, but Java is product of Sun Microsystems.
- A JavaScript is usually embedded directly into HTML pages
- JavaScript syntax is simplifier with C++ and Java.
- JavaScripts in the body section will be executed WHILE the page loads.
- JavaScripts in the head section will be executed when CALLED.
How to Put
a JavaScript in an HTML Page
<html>
<body>
<script Language="JavaScript">
document.write("Hello Programmers!")
</script>
</body>
</html>
And it display following output:
Hello Programmers!
<script> is an HTML tag that has an attribute JavaScript
<script
Language="JavaScript">
document.write is standard javascript command used to display output on HTML page.
document.write("Hello Programmers!")
The script ends.
</script>
Ending Statements of JavaScript
The ending statement of JavaScript is semicolon (;).
