parseU10Int vs. parseInt(,10)

Benchmark created by Devyn Cairns on October 5, 2011

Preparation HTML

<script>
  var num = "2092109302";
  
  function parseU10Int(str) {
    var n = 0,
        c;
    for (var i = 0, len = str.length; i < len; i++) {
      c = str.charCodeAt(i) - 48;
      if (c >= 0 && c <= 9) {
        n = n * 10 + c;
      } else {
        return n;
      }
    }
    return n;
  }
</script>

Test runner

parseU10Int(num);

parseInt(num, 10);

parseInt(num);

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

• Revision 1: published by Devyn Cairns on October 5, 2011
• Revision 2: published by Devyn Cairns on October 6, 2011