Read line by line of a text file using JavaScript

I have a file called "newfile.txt" which has two lines of text in it

newfile.txt

Lights Turned on
Lights turned off

I have a javascript function which reads the text file and i can access the output through the variable called "status" (see below) and when i console log "status" I can see both the lines present in newfile.txt.

Javascript ( to read the text file)

var status;
function readTextFile1(file)
{
    var rawFile = new XMLHttpRequest();
    rawFile.open("GET", file, false);
    rawFile.onreadystatechange = function ()
    {
        if(rawFile.readyState === 4)
        {
            if(rawFile.status === 200 || rawFile.status == 0)
            {
               status = rawFile.responseText;
               
            }
        }
    }
    rawFile.send(null);
}

 readTextFile1("newfile.txt"); //calling the function

console.log(status);

Now the problem is, I need to use an if statement based on the text in each line

For example ( just my concept)

if ( status (line 1) = "Lights Turned Off" ){
do something
}

if ( status (line 2) = "Lights Turned On" ){
do something
}

Any help is appreciated. Thanks a lot for your time.

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