JS Access XML node operation

Get element value

X=xmldoc.getelementsbytagname ("title") [0];
Y=x.childnodes[0];
Txt=y.nodevalue;
Result: txt = "Everyday Italian"

Get attribute Value-getattribute ()

Xmldoc=loadxmldoc ("books.xml");
Txt=xmldoc.getelementsbytagname ("title") [0].getattribute ("Lang");
Result: txt = "en"

Get attribute Value-GetAttributeNode ()

X=xmldoc.getelementsbytagname ("title") [0].getattributenode ("Lang");
Txt=x.nodevalue;

Change the value of a text node

xmldoc = Loadxmldoc ("books.xml");
x = xmldoc. getElementsByTagName ("title") [0].childnodes[0];
X.nodevalue= "Easy Cooking";

Change the value of a property

xmldoc = Loadxmldoc ("books.xml");
x = xmldoc. getElementsByTagName ("book");
X[0].setattribute ("category", "food");

Delete Element node

xmldoc = Loadxmldoc ("books.xml");
y = xmldoc.getelementsbytagname ("books") [0];
XmlDoc.documentElement.removeChild (y);

Delete itself

xmldoc = Loadxmldoc ("books.xml");
x = Xmldoc.getelementsbytagname ("book") [0];
X.parentnode.removechild (x);

Delete a text node

xmldoc = Loadxmldoc ("books.xml");
x = Xmldoc.getelementsbytagname ("title") [0];
y = x.childnodes[0];
X.removechild (y);

Emptying text nodes

xmldoc = Loadxmldoc ("books.xml");
x = Xmldoc.getelementsbytagname ("title") [0];
X.nodevalue = "";

Delete an attribute node by name

xmldoc = Loadxmldoc ("books.xml");
x = Xmldoc.getelementsbytagname ("book");
X[0].removeattribute (' category ');

To delete an attribute node from an object

xmldoc = Loadxmldoc ("books.xml");
x = Xmldoc.getelementsbytagname ("book");
for (Var i=0;i<x.length;i++) {
while (x[i].attributes.length>0) {
Attnode=x[i].attributes[0];
Old_att=x[i].removeattributenode (Attnode);
}
}
X[0].removeattribute (category);

Replace element node

The ReplaceChild () method is used to replace the node.
xmldoc = Loadxmldoc ("books.xml");
x = xmldoc.documentelement;

Create a book element, title element and a text node
NewNode = Xmldoc.createelement ("book");
Newtitle = xmldoc.createelement ("title");
NewText = Xmldoc.createtextnode ("A Notebook");

Add the text node to the title node,
Newtitle.appendchild (NewText);
Add the title node to the book node
Newnode.appendchild (Newtitle);

y = Xmldoc.getelementsbytagname ("book") [0];
Replace the first book node with the new node
X.replacechild (Newnode,y);

Replace data in a text node

The ReplaceData () method is used to replace data in a text node.
The ReplaceData () method has three parameters:
offset-where to start replacing characters. The offset value starts at 0.
length-How many characters to replace.
string-the string to be inserted.

xmldoc = Loadxmldoc ("books.xml");
x = Xmldoc.getelementsbytagname ("title") [0].childnodes[0];
X.replacedate (0,8, "easy");

Replace the data in the text node with the NodeValue property.
xmldoc = Loadxmldoc ("books.xml");
x = Xmldoc.getelementsbytagname ("title") [0].childnodes[0];
X.nodevalue= "Easy Italian";

Create a new element node

The CreateElement () method creates a new element node.
xmldoc = Loadxmldoc ("books.xml");
NewNode = Xmldoc.createelement ("edition");
x = Xmldoc.getelementsbytagname ("book") [0];
X.appendchild (NewNode);

Create a new attribute node

xmldoc = Loadxmldoc ("books.xml");
Newatt = Xmldoc.createattribute ("edition");
Newatt.nodevalue = "First";
x = Xmldoc.getelementsbytagname ("title");
X[0].setattributenode (Newatt);

Create properties from SetAttribute.
xmldoc = Loadxmldoc ("books.xml");
x = Xmldoc.getelementsbytagname ("book");
X[0].setattribute ("edition", "First");

Create a text node

The createTextNode () method creates a new text node.
xmldoc = Loadxmldoc ("books.xml");
NewNode = Xmldoc.createelement ("publisher");
NewText = Xmldoc.createtextnode ("中文版");
Newnode.appendchild (NewText);
x = Xmldoc.getelementsbytagname ("book") [0];
X.appendchild (NewNode);

Create a CDATA section node

xmldoc = Loadxmldoc ("books.xml");
Newcdata = Xmldoc.createcdatasection ("Special Offer & Book Sale");
x = Xmldoc.getelementsbytagname ("book") [0];
X.appendchild (Newcdata);

Create a Comment node

xmldoc = Loadxmldoc ("books.xml");
NewComment = xmldoc.createcomment ("Revised March 2008");
X=xmldoc.getelementsbytagname ("book") [0];
X.appendchild (NewComment);

Adding nodes

xmldoc = Loadxmldoc ("books.xml");
NewNode = Xmldoc.createelement ("publisher");
x = Xmldoc.getelementsbytagname ("book") [0];
X.appendchild (NewNode);

Insert Node--insertbefore ()

xmldoc = Loadxmldoc ("books.xml");
NewNode = Xmldoc.createelement ("book");
x = xmldoc.documentelement;
y = Xmldoc.getelementsbytagname ("book") [3];
X.insertbefore (Newnode,y);

Add new Property

xmldoc = Loadxmldoc ("books.xml");
x = Xmldoc.getelementsbytagname ("book");
X[0].setattribute ("edition", "First");

Add text to a text node--insertdata ()

xmldoc = Loadxmldoc ("books.xml");
x = Xmldoc.getelementsbytagname ("title") [0].childnodes[0];
X.insertdata (0, "easy");

Replication nodes

xmldoc = Loadxmldoc ("books.xml");
OldNode = Xmldoc.getelementsbytagname ("book") [0];
NewNOde = Oldnode.clonenode (true);
XmlDoc.documentElement.appendChild (NewNode);
Output all titles
y = xmldoc.getelementsbytagname ("title");
for (Var i=0;i<y.length;i++) {
document.write (Y[i].childnodes[0].nodevalue);
document.write ("<br/>");
}

Source: Http://blog.163.com/[email protected]/blog/static/4453605920115235839577/

JS Access XML node operation