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E4X Tutorial

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E4X is a new extension to JavaScript

E4X adds direct support for XML to JavaScript

E4X is an official JavaScript standard

What You Should Already Know

Before you continue you should have a basic understanding of the following:

  • HTML
  • JavaScript
  • XML

To study these subjects first, find all the tutorials you need on our Home Page.

JavaScript = ECMAScript

ECMAScript is the official name for JavaScript.

ECMAScript is the same as JavaScript.

ECMA (The European Computer Manufacturers Association) is the organization standardizing JavaScript.

E4X = JavaScript for XML

E4X means "ECMAScript For XML". It is a standard extension to ECMAScript.

So in real life E4X means "JavaScript for XML".

XML As a JavaScript Object

E4X is an official JavaScript standard that adds direct support for XML.

With E4X, you can declare an XML object variable the same way as you declare a Date or an Array object variable:

var x = new XML()
var y = new Date()
var z = new Array()

E4X makes scripting for XML with JavaScript very simple.

Examples are provided in the next chapter.

E4X is a Web Standard

ECMA-262 (JavaScript 1.3) was standardized in December 1999.

E4X is an extension of JavaScript that adds direct support for XML.

ECMA-357 (E4X) was standardized in June 2004.

Read more about the E4X activities at ECMA International.

ECMA International

ECMA International was founded in 1961.

The ECMA organization is dedicated to the standardization of Information and Communication Technology (ICT) and Consumer Electronics (CE).

ECMA has developed standards for

  • JavaScript
  • C# Language
  • International Character Sets
  • Optical Disks
  • Magnetic Tapes
  • Data Compression
  • Data Communication
  • and much more

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