parsing csv data in javascript not working in chrome

Question

I am parsing the csv file in javascript using the below logic. The logic works correctly in firefox browser but on chrome browser, the output is different.

 var r = new FileReader();
 r.onload = function (e) {
   contents = e.target.result;
     $scope.$apply(function () {
       $scope.fileReader = contents;
        contents = contents.replace(/\r\n+/g, ",");
        reqObj.names = contents.split(",");
        defer.resolve("Succesfully executed");
     });
  };
r.readAsText(file);

Output in Firefox : names: ["pradeep", "naveen", "kiran"] Output in Chrome : names: ["pradeep\nnaveen\nkiran"]

Please let me know where I am going wrong.

Additionally you can call a get method inside a ready function — claudios
– claudios, Commented Oct 12, 2016 at 6:07
@claudios can you please let me know what does /\r\n+/g mean in javascript — zilcuanu
– zilcuanu, Commented Oct 12, 2016 at 6:15
.replace(/\r\n+/g, ",") replaces a CR followed with 1+ LF symbols with a comma multiple times. I guess it should have been written as .replace(/(?:\r?\n)+/g, ",") — Wiktor Stribiżew
– Wiktor Stribiżew, Commented Oct 12, 2016 at 6:52

Wiktor Stribiżew · Accepted Answer · 2016-10-12 06:56:00Z

2

The .replace(/\r\n+/g, ",") part of code replaces multiple occurrences of a CR followed with one or more LF symbols with a comma. E.g., it will replace with a comma "\r\n\n\n\n\n\n" or "\r\n", but will never find "\n\n\n\n".

Since linebreaks can be defined as CRLF, CR, LF, you may change that part to

.replace(/(?:\r?\n|\r)+/g, ",")

to replace CRLF/LF/CR type of linebreaks.

var s = "pradeep\r\nnaveen\nkiran\rhere";
console.log(s.replace(/(?:\r?\n|\r)+/g, ","));

answered Oct 12, 2016 at 6:56

Wiktor Stribiżew

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