How to send a SOAP request in javascript, like in SoapUI

I am currently working on a NodeJS project where I need to use some soap/xml/wsdl. The problem is that can't figure out how any of these works, so forgive my ignorance. Here is what I need:

I have this WSDL site that I need to get some answers from. I have figured out how to do this in SoapUI, but I have no idea how to do it in Javascript. The request that I am sending in soapUI looks like this:

<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:uni="https://uni-login.dk">
   <soap:Header/>
   <soap:Body>
      <uni:hentDataAftaler>
         <uni:wsBrugerid>?</uni:wsBrugerid>
         <uni:wsPassword>?</uni:wsPassword>
      </uni:hentDataAftaler>
   </soap:Body>
</soap:Envelope>

I also have the wsdl-link: https://wsiautor.uni-login.dk/wsiautor-v4/ws?WSDL

I have also tried to use some npm-packages in nodeJS (SOAP, Strong-SOAP and Easy-SOAP), but I can't make these work either.

I hope you I have some suggestions and tell me if you need any more information to answer my question :)

from How to send a SOAP request in javascript, like in SoapUI