E4X How To
With E4X, you can define an XML document as a JavaScript
object.
E4X Example
As an example, we can parse and edit an XML document that represents a note.
The XML document looks like this:
<note>
<date>2002-08-01</date>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don't forget me this weekend!</body>
</note>
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If we had this XML document stored in a string called note, we
could load it into an XML object variable called x, by writing the following
JavaScript statement:
Or we could assign the XML text directly to the XML object variable:
var x = new XML()
x=
<note>
<date>2002-08-01</date>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don't forget me this weekend!</body>
</note>
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XML As a JavaScript Object
With E4X, you can declare an XML object the same way as you declare Date or Math
objects:
var x = new XML()
var y = new Date()
var z = new Array()
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Since you can declare an XML document as an XML object, it is also very easy
to parse and manipulate the XML document.
For the XML example above, the JavaScript statement:
document.write(x.from)
will produce the output:
Jani
Quite simple. Don't you think?
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