Test case details

Preparation Code

<script>   var ar = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; </script>

Test cases

Test #1

for (var i = 0, n = ar.length; i < n; i++) {   if (ar[i] === 5) {     break;   } }

Test #2

var a = ar.indexOf(5);

Test #3

var indexOf5 = -1; ar.forEach(function(e, i, a) {   if (e === 5) {     indexOf5 = i;   } });