Array Performance (v73)

Revision 73 of this benchmark created on

Description

Manual array lookups vs. holey arrays.

Preparation HTML

<script src="http://cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.js"></script>

Setup

var a1 = [{id: '29938', name: 'name1'}, {id: '32994', name: 'name1'}];

    var a2 = [];
    a2[29938] = {id: 29938, name: 'name1'};
    a2[32994] = {id: 32994, name: 'name1'};

    var o = {};
    o['29938'] = {id: '29938', name: 'name1'};
    o['32994'] = {id: '32994', name: 'name1'};

Test runner

Ready to run.

Testing in
TestOps/sec
Manual Array Lookup
var id = '29938';
for (var i = 0; i < a1.length; i++) {
  if (a1[i].id === id) result = a1[i];
}
 
ready
lodash
var id = '29938';
_.each(a1, function(val) {
  if (val.id === id) result = val;
});
 
ready
var id = '29938';
var result = o[id];
 
ready
noop
var func = function(val, i){
   //no-op
}
ready

Revisions

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