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XML Applications

This chapter demonstrates some small XML-based application XML, HTML, XML DOM and JavaScript built.

XML document instance

In this application, we will use the "cd_catalog.xml" file.

Showing a CD in HTML div element

The following examples get XML data from the first element of a CD, and then display the data in the id = "showCD" HTML element. displayCD () function is invoked when the page loads:

Examples

x=xmlDoc.getElementsByTagName("CD");
i=0;

function displayCD()
{
artist=(x[i].getElementsByTagName("ARTIST")[0].childNodes[0].nodeValue);
title=(x[i].getElementsByTagName("TITLE")[0].childNodes[0].nodeValue);
year=(x[i].getElementsByTagName("YEAR")[0].childNodes[0].nodeValue);
txt="Artist: " + artist + "<br />Title: " + title + "<br />Year: "+ year;
document.getElementById("showCD").innerHTML=txt;
}

try it"

Add navigation script

To add navigation (function) to the above example, we need to create the next () and previous () two functions:

Examples

function next()
{ // display the next CD, unless you are on the last CD
if (i<x.length-1)
{
i++;
displayCD();
}
}

function previous()
{ // displays the previous CD, unless you are on the first CD
if (i>0)
{
i--;
displayCD();
}
}

try it"

When you click the CD album information is displayed when

The last example shows how to display album information when the user clicks on a CD project:

Try .

For more information about using JavaScript and XML DOM, visit our XML DOM tutorial .