Java：My first javascript file on xml.

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My first javascript file on xml.

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> Practice on Xml operation </TITLE>

</HEAD>

</BODY>
</HTML>
<script>
function addNewNode()
{
var strNode = "<book>";
strNode = strNode + "<code>F5678</code>";
strNode = strNode + "</book>";

var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async="false";
if(!xmlDoc.loadXML(strNode))
{
document.write("FAIL TO BUILD AN XML FILE");
}
else
{
document.write("original xml file:");
document.write("<xmp>" + xmlDoc.xml + "</xmp>");

//Add price node
var objNewNode = xmlDoc.createElement("price");
xmlDoc.documentElement.appendChild(objNewNode);

//Add the text of price node
var objNewText = xmlDoc.createTextNode("345");
var objNode = xmlDoc.documentElement.getElementsByTagName("price").item(0);
objNode.appendChild(objNewText);
document.write("price node with text:");
document.write("<xmp>"+xmlDoc.xml+"</xmp>");

//Add author node
var objPosNode = xmlDoc.documentElement.firstChild;
objNewNode = xmlDoc.createElement("author");
objNewText = xmlDoc.createTextNode("Calvin");
objNewNode.appendChild(objNewText);
xmlDoc.documentElement.insertBefore(objNewNode,objPosNode);
document.write("author is added: ");
document.write("<xmp>" + xmlDoc.xml + "</xmp>");

//Add attribute into code node
objNode = xmlDoc.getElementsByTagName("code");
objNode.item(0).setAttribute("sales","Y");
document.write("code's attribute is added: ");
document.write("<xmp>" + xmlDoc.xml + "</xmp>");

//Remove author node
var root = xmlDoc.documentElement;
var objDelNode = root.removeChild(root.getElementsByTagName("author").item(0));
document.write("author node is deleted");
document.write("<xmp>" + xmlDoc.xml + "</xmp>");

//Remove the attribute of code node
objNode = root.getElementsByTagName("code").item(0);
objNode.removeAttribute("sales");
document.write("sales attribute of code node is removed:");
document.write("<xmp>" + xmlDoc.xml + "</xmp>");
}

}
</script>

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