CSV Download from document withing Javascript JS

pageHrefs.txt

var allDeals = document.getElementsByClassName('u-uncoloredLink js-syndicate_click');

var links = []
for (var i=0; i < allDeals.length; i++) {
  links.push(allDeals[i].getAttribute('data-url'));
};

var csvContent = "data:text/csv;charset=utf-8,";
links.forEach(function(rowArray){
   csvContent += rowArray + "\r\n";
}); 

var encodedUri = encodeURI(csvContent);
window.open(encodedUri);