How to read lines from a text file with Javascript?

I looked into the function you recommended to me, and I have built my code off of that, along with other functions.

However, I am running into the problem that my string searches are returning number values, and not the string line itself.

Even if I use the, "String()" method, it still returns the same number value.

Here is my code:

this.importDataObject("MEDDIAGNOSISICD-10.txt", "C:\Users\dell\Documents\tab excel\MEDDIAGNOSISICD-10.txt");

var oFile = this.getDataObjectContents("MEDDIAGNOSISICD-10.txt");

var cFile = util.stringFromStream(oFile, "utf-8");

var Med1 = cFile.search("ADVIL");

var Text1 = String(Med1);

console.println(String(Text1));

the return value is: 9607

I repeated the String() method several times here, to see what worked... which all of my tests did not work, sadly.

Is there any way to fix this issue, and return the string line itself? try67​