Assigning duplicate values to object (v2)

Revision 2 of this benchmark created by Mark on

Setup

var arr = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j','k', 'l', 'm','n', 'o', 'p', 'q', 'r', 's', 't', 'w', 'x', 'y', 'z'];
    for (var i = 0; i < 10; ++i) {
      arr = arr.concat(arr);
    }

Test runner

Ready to run.

Testing in
TestOps/sec
Check before adding to object
var obj = {};
for (var i = 0; i < arr.length; ++i) {
  if (!obj[arr[i]]) {
    obj[arr[i]] = true;
  }
}
ready
Just add it
var obj = {};
for (var i = 0; i < arr.length; ++i) {
  obj[arr[i]] = true;
}
ready

Revisions

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

  • Revision 1: published by Mark on
  • Revision 2: published by Mark on