Access specific Element and its Child elements!

suersh79 · November 20th, 2006, 06:04 AM

How to retrieve a particular element and only its child elements from a xml? For example, if a user selects an employee, I want to map the selected employee and retrieve the data.

I am using XMLHttp object to load xml and I watn to access the elements using the method, getElementsByTagName("") in my javascript.

xml file:

<payslip>
<employee
     <name>SURESH</name>
     <id>E1020</id>
     <role>DEVELOPER</role>
</employee>
<employee
     <name>KUMAR</name>
     <id>E1030</id>
     <role>ANALYST</role>
</employee>
<employee
     <name>RAMESH</name>
     <id>E2050</id>
     <role>ACCOUNTANT</role>
</employee>
</payslip>

Javascript:

function showData(){
//Get the selected employee name from combobox.
var empName = comboBox.options[comboBox.selectedIndex].value;
//Assume that user has selected a name = KUMAR.

//Get the reference to <payslip> attribute.
var rootElement = xmlObj.getElementsByTagName('payslip');

//I am sure I am wrong with this for loop.
for (var i = 0; i < rootElement.length; i++) {

        if (getEmelementsByTagName('employee = KUMAR')) {
         //retrieve the child elements of particular <employee> element>
        }
}

}

Thanks in advance!

Suresh.

suersh79 · November 21st, 2006, 10:08 AM

Any suggestions!!!!!!

joefawcett · November 21st, 2006, 10:56 AM

Quote:

quote:Originally posted by suersh79
Any suggestions!!!!!!

Yes, if you want a quick response pay for professional help.

You'd be better off using Xpath

Code:

xmlDoc.setProperty("SelectionLanguage", "XPath");
var empName = comboBox.options[comboBox.selectedIndex].value;
var sXPath = "/payslip/employee[name = '" + empName + "']";
var oEmployee = xmlObj.selectSingleNode(sXPath);

This assumes you're using Microsoft's XMLHttp, version 3.0 or greater.
If you have to use getElementsByTagName it's more difficult as you must select all employee elements:

Code:

var colEmployees = xmlObj.getElementsByTagName("employee");

Then loop through them all and test if .firstChild.text = empName.

--

Joe (Microsoft MVP - XML)

suersh79 · November 22nd, 2006, 12:58 AM

quote:
--------------------------------------------------------------------------------
Originally posted by Joe (Microsoft MVP - XML)

Yes, if you want a quick response pay for professional help.
---------------------------------------------------------------------

I thought its a dicussion p2p Community Forum! Anyway if it has to be, how could that be done!
--------------------------------------------------------------

Nothing personal;).
Thanks Joe!
Does it works with Mozilla, Netscape?

Suresh.