Run results for: testm1

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36

Browser: Chrome 63

Operating system: Windows 7

Device Platform: Other

Date tested: 2024 years ago

Test name	Executions per second
m1	3917.5 Ops/sec
m2	2228.6 Ops/sec

Script Preparation code:

var mp = new Map(),
    mparr;
for (var i = 0; i < 1000; i++) {
    mp.set(`${i}${i}`, i);
}
mparr = [...mp];

Tests:

m1
var cnt = 0; for (var i = 0; i < 1000; i++) { if (mp.has(`${i+10}${i+10}`)) { cnt++ } }
m2
var cnt = 0, mpp = new Map(mparr), mpparr; for (var i = 0; i < 1000; i++) { if (mpp.has(`${i+10}${i+10}`)) { cnt++ } } mpparr = [...mpp];
m3
var cnt = 0; for (var i = 0; i < 1000; i++) { if (mparr.find(x => x[0] === `${i+10}${i+10}`)) { cnt++ } }