<script src="//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.4.1/underscore-min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/0.8.2/lodash.min.js"></script>
<script>
 var lodash = _.noConflict();
 var pi = Math.PI,
 a = "t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t".split(","), e;
</script>

Setup JS

Teardown JS

Test cases

Test #1

Title *

Async

Code *

lodash.each(a, function(item) {
  item = pi;
});

Test #2

Title *

Async

Code *

_.each(a, function(item) {
  item = pi;
});

Test #3

Title *

Async

Code *

a.forEach(function(item) {
  item = pi;
});

Test #4

Title *

Async

Code *

var cb = function(item) {
        item = pi;
    };
for (var ix = 0; ix < a.length; ix++) {
    cb(a[ix]);
}

Test case details

Preparation Code

Test cases

Test #1

Test #2

Test #3

Test #4