Run results for: find vs lookup

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36

Browser: Chrome 143

Operating system: Windows

Device Platform: Desktop

Date tested: 3 months ago

Test name	Executions per second
find method	1434799.5 Ops/sec
lookup method	5242896.0 Ops/sec

Script Preparation code:

var arr = [];
var i = 0;
while (i <= 10) arr[i] = ('' + i++);
var testSet = new Set(arr);
var testObj = {};
for (const a of arr) {
  testObj[a] = true;
}


var randomKeys = [];
i = 0;
while (i <= 50) {
 randomKeys.push(''+Math.round(Math.random(50000) + 5000));
  i++;
}

Tests:

find method
for (const key of randomKeys) {const index = arr.find(item => item == key);}
lookup method
for (const key of randomKeys) {const index = testObj[key];}

Run results for: find vs lookup

find method

lookup method