Preparation code

<script>
  var arr = [];
</script>

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

if (!arr.length) {}

if (arr.length == 0) {}

if (arr.length === 0) {}

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

Compare results of other browsers

0 comments