Run results for: Unique via Set vs Filter

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36

Browser: Chrome 52

Operating system: Linux

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
Filter	15862.3 Ops/sec
Set	42237.2 Ops/sec

Script Preparation code:

var filterMyUniques = ['lorem', 'ipsum', 'dolor', 'sit', 'amet', 'consectetur', 'adipiscing', 'elit', 'Maecenas', 'consectetur', 'vehicula', 'interdum', 'etiam', 'id', 'dui', 'pellentesque', 'felis', 'ultricies', 'fringilla', 'Phasellus', 'mollis', 'ligula', 'quis', 'nibh', 'fringilla', 'consectetur', 'in', 'nec', 'augue', 'vel', 'risus', 'condimentum', 'hendrerit', 'Aenean', 'sapien', 'est', 'malesuada', 'ut', 'ipsum', 'ac', 'feugiat', 'mattis', 'tellus', 'nam', 'consequat', 'rutrum', 'augue', 'nec', 'volutpat', 'sapien', 'euismod', 'eu', 'Integer', 'vel', 'faucibus', 'leo', 'et', 'ultricies', 'turpis', 'phasellus', 'eleifend', 'erat', 'sit', 'amet', 'eleifend', 'maximus', 'augue', 'nisi', 'ullamcorper', 'ligula', 'sed', 'pharetra', 'velit', 'arcu', 'et', 'nibh', 'Proin', 'ut', 'fringilla', 'eros'];

Tests:

Filter
var uniques = filterMyUniques.filter( function( item, index, list ){ return list.indexOf( name ) === index; } )
Set
var set = {}; filterMyUniques.forEach( function( item, index, list ){ set[item] = 1; } ) var uniques = Object.keys( set );