Array Performance (v34)

Revision 34 of this benchmark created on

Description

Manual array lookups vs. holey arrays.

Setup

var a1 = [], o = {}, a2=null;
    for( i=0; i <=5000; i ++){
      a1.push( { id: i, name: 'name' });
      o[i] = { id: i, name: 'name' };
    }

Test runner

Ready to run.

Testing in
TestOps/sec
Manual Array Lookup
var id = Math.floor(Math.random() * 5000) ;
for (var i = 0; i < a1.length; i++) {
  if (a1[i].id = id) result = a1[i];
}
 
ready
Holey Array by Index
 
ready
Object by Key
var id = Math.floor(Math.random() * 5000) ;
var result = o[id];
 
ready

Revisions

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