m3u parsing

HTML

<input type="file" name="file" id="file">

JavaScript

document.getElementById('file').onchange = function() {

   var file = this.files[0];

   var reader = new FileReader();
   reader.onload = function(progressEvent) {
     // Entire file for debugging
     //console.log(this.result);

     // By lines
     var lines = this.result.split('\n');

     console.log('File read.');

     //Check if this is an m3u file
     if (lines[0].includes("#EXTM3U")) {
       console.log("File header found!");

       //Go through each line
       for (var line = 1; line < lines.length; line++) {

         //Process line
         if (lines[line].includes("#EXTINF")) {

           //print full line
           console.log(lines[line]);

           //split each line into the elements
           var currentLine = lines[line].substring(7).split(',');
           console.log("Runtime: " + currentLine[0]);
           console.log("Song:" + currentLine[1]);
         } else {
           continue;
         }
       }
     } else {
       console.log(lines[0]);
       console.log("Not m3u file...");
     }
   };
   reader.readAsText(file);
 };