4 ms·

Better yet, set a variable to Date.now since it's called twice.

• ajanuary 11y ago
  It's called at different times so will return different values, which is important.
  • ahoge 11y ago
    They meant something like "var n = Date.now". However, there is no guarantee that this will work since it assumes that `this` isn't used by that function. E.g. if you want to do something like that with console.log or document.querySelector, you have to use bind: var log = console.log.bind(console); var qs = document.querySelector.bind(document);
  • roberto 11y ago
    a = Date.now; b = a(); c = a();