Info

For a more thorough suite of benchmarks, visit http://lodash.com/benchmarks.

Preparation code

<script src="//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.4.4/underscore-min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/1.1.1/lodash.min.js"></script>
<script>
var lodash = _.noConflict();
</script>
<script>
  Benchmark.prototype.setup = function() {
    var numbers = [];
    var object = {};
    for (var i = 0; i < 20; i++) {
      numbers[i] = i;
      object['key' + i] = i;
    }
    var objects = _.map(numbers, function(n) { return { 'num': n }; });
    var randomized = _.sortBy(numbers, function() { return Math.random(); });
  };
</script>

Preparation code output

Test runner

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

Java applet disabled.

var timesTwo = [];
_.each(numbers, function(num) { timesTwo.push(num * 2); });

var timesTwo = [];
lodash.each(numbers, function(num) { timesTwo.push(num * 2); });

var timesTwo = [];
_.each(object, function(num) { timesTwo.push(num * 2); });

var timesTwo = [];
lodash.each(object, function(num) { timesTwo.push(num * 2); });

_.keys(object);

lodash.keys(object);

_.map(objects, function(obj) { return obj.num; });

lodash.map(objects, function(obj) { return obj.num; });

_.pluck(objects, 'num');

lodash.pluck(objects, 'num');

_.values(objects);

lodash.values(objects);

Compare results of other browsers

Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

• Revision 1: published by John-David Dalton on 1st April 2012 and last updated on 9th April 2013
• Revision 2: published by John-David Dalton on 13th April 2013
• Revision 3: published on 25th April 2013

1 comment