Ans:

E4X means "ECMAScript For XML Using E4X, we can develop code with XML data faster than was possible with previous programming techniques. E4X provides a set of classes and functionality for working with XML data. ActionScript 3.0 includes the following E4X classes: XML, XMLList, QName, and Namespace.

Here is an example of manipulating data with E4X:

var myXML:XML =
<order>
<item id="1">
<name>colddrink</name>
<price>12</price>
< /item>
<item id="2">
<name>burger</name>
<price>10</price>
< /item>
< /order>
trace (myXML.item[0].menuName); // Output: colddrink
trace (myXML.item.(@id==2).menuName); // Output: burger
trace (myXML.item.(menuName=="burger").price); // Output: 10