XML parse in Javascript

Question

Trying to use an xml in javascript. The emailtest.xml needs to be taken from the same folder as emailtest.js and emailtest.html. I am not sure how to use the parser. Is there a right way to address a xml in js?

//emailtest.js

function window_open(){
    parser= new DOMparser();
    email = parser.parseFromString("emailtest.xml", "text/xml);
    textbox1.text=email(1,1)
    
}

//emailtest.xml

<?xml version="1.0 encoding="UTF-8" standalone="yes">
<data-set xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<table>
    <0>
        <fname>John</fname>
        <lname>Doe</lname>
        <email>[email protected]</email>
    </0>
    <1>
        <fname>Jane</fname>
        <lname>Doe</lname>
        <email>[email protected]</email>
    </1>
</table>