Strange behavior in Javascript new Date function

Question

I tried to make Date object from string in javascript, but i see javascript parse date string very strange here.

> new Date(\"2012-01-01\");
Sun Jan 01 20         


        

Answer 1

The reason for the difference is explained in other answers. A good way to avoid the issue is to parse the string yoruself. If you want 2012-01-01 to be treated as UTC then:

function dateFromUTCString(s) {
  var s = s.split(/\D/);
  return new Date(Date.UTC(s[0], --s[1], s[2]));
}

If you want to treat it as a local date, then:

function dateFromString(s) {
  var s = s.split(/\D/);
  return new Date(s[0], --s[1], s[2]);
}