design, validate forms, detect browsers, create cookies, and much more.
internet, and works in all major browsers, such as Internet
Explorer, Firefox, and Opera.
What You Should Already Know
Before you continue you should have a basic understanding of the following:
If you want to study these subjects first, find the tutorials on our
- A scripting language is a lightweight programming language
Java (developed by Sun Microsystems) is a powerful and much more complex
programming language - in the same category as C and C++.
very simple syntax! Almost anyone can put small "snippets" of code into their
"</h1>") can write a variable text into an HTML page
when something happens, like when a page has finished loading or when a user
clicks on an HTML element
and change the content of an HTML element
to validate form data before it is submitted to a server. This saves the
server from extra processing
the browser - load another page specifically designed for that browser
used to store and retrieve information on the visitor's computer
The Real Name is ECMAScript
developed and maintained by the
The language was invented by Brendan
Eich at Netscape (with Navigator 2.0), and has appeared in all Netscape and Microsoft
browsers since 1996.
The development of ECMA-262 started in 1996, and the
first edition of was adopted by the ECMA General Assembly in June 1997.
The standard was approved as an international ISO (ISO/IEC
16262) standard in 1998.
The development of the standard is still in progress.
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