w3schools
  
HOME HTML CSS XML JAVASCRIPT ASP PHP SQL MORE...   References Examples Forum About

Why E4X?

« Previous Next Chapter »

E4X makes XML very simple to use.


E4X is Much Simpler

If you have ever tried to use JavaScript to parse and manipulate XML, you will find that E4X is much simpler to use.

Without E4X you have to use an XML library (or an XML component) to work with XML.

These libraries or components have different syntax and work differently in different browsers.


Without E4X

The following example is a cross browser example that loads an existing XML document ("note.xml") into the XML parser and displays the message from the note:

Example

var xmlDoc;
//code for Internet Explorer
if (window.ActiveXObject)
{
xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async=false;
xmlDoc.load("note.xml");
displaymessage();
}
// code for Mozilla, Firefox, etc.
else (document.implementation && document.implementation.createDocument)
{
xmlDoc= document.implementation.createDocument("","",null);
xmlDoc.load("note.xml");
xmlDoc.onload=displaymessage;
}

function displaymessage()
{
document.write(xmlDoc.getElementsByTagName("body")[0].firstChild.nodeValue);
}

Try it yourself »

With E4X

The following example is the same as above but using E4X:

var xmlDoc=new XML();
xmlDoc.load("note.xml");
document.write(xmlDoc.body);

Much simpler, isn't it?


« Previous Next Chapter »


The Creators of XMLSpy are Pleased to Announce

The MOST WANTED features for Developers and
IT Professionals in Version 2010

Collect your handsome reward! Download a free trial and experience more than 70 of the Most Wanted features including:

  • JSON editing & conversion in XMLSpy
  • WSDL 2.0 editing in XMLSpy (adding to WSDL 1.1 support)
  • WSDL 2.0 data mapping in MapForce
  • Numerous data mapping enhancements in MapForce
  • Numerous stylesheet design enhancements in StyleVision
  • XML Schema comparison in DiffDog
  • And much more!
Fully functional 30-day free trial of the Altova MissionKit
Altova XMLSpy


WEB HOSTING
Best Web Hosting
PHP MySQL Hosting
Top 10 Web Hosting
UK Reseller Hosting
Web Hosting
FREE Web Hosting
Top Web Hosting
Windows Hosting
WEB BUILDING
Download XML Editor
FREE Flash Website
FREE Web Templates
FLIGHT TICKETS
Find the cheapest flight
to any destination now!
EDUCATION
US Web Design Schools
HTML Certification
JavaScript Certification
XML Certification
PHP Certification
ASP Certification
STATISTICS
Browser Statistics
Browser OS
Browser Display