Run results for: dict allocation vs if

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.134 Safari/537.36 Edg/103.0.1264.77

Browser: Chrome 103

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
dict	42533.8 Ops/sec
if	41561.2 Ops/sec
switch	41135.1 Ops/sec

Tests:

dict
const dict = {}; dict['test1'] = 'sth1'; dict['test2'] = 'sth2'; dict['test3'] = 'sth3'; let t = 'nn'; console.log(dict[t]); t='test1'; console.log(dict[t]); t='test2'; console.log(dict[t]); t='test3'; console.log(dict[t]);
if
let t = 'nn'; if(t === 'test1') { console.log('sth1'); } else if(t == 'test2') { console.log('sth2'); } else if(t == 'test3') { console.log('sth3'); } else { console.log(undefined); } t='test1'; if(t === 'test1') { console.log('sth1'); } else if(t == 'test2') { console.log('sth2'); } else if(t == 'test3') { console.log('sth3'); } else { console.log(undefined); } t='test2'; if(t === 'test1') { console.log('sth1'); } else if(t == 'test2') { console.log('sth2'); } else if(t == 'test3') { console.log('sth3'); } else { console.log(undefined); } t='test3'; if(t === 'test1') { console.log('sth1'); } else if(t == 'test2') { console.log('sth2'); } else if(t == 'test3') { console.log('sth3'); } else { console.log(undefined); }
switch
let t='nn'; switch(t) { case 'test1': console.log('sth1'); break; case 'test2': console.log('sth2'); break; case 'test3': console.log('sth3'); break; default: console.log(undefined); } t='test1'; switch(t) { case 'test1': console.log('sth1'); break; case 'test2': console.log('sth2'); break; case 'test3': console.log('sth3'); break; default: console.log(undefined); } t='test2'; switch(t) { case 'test1': console.log('sth1'); break; case 'test2': console.log('sth2'); break; case 'test3': console.log('sth3'); break; default: console.log(undefined); } t='test3'; switch(t) { case 'test1': console.log('sth1'); break; case 'test2': console.log('sth2'); break; case 'test3': console.log('sth3'); break; default: console.log(undefined); }

Run results for: dict allocation vs if

dict

if

switch