Run results for: Include vs Binary search in sorted array vs Map.has() vs Object[]

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.4.1

Device Platform: Mobile

Date tested: 2 years ago

Map.has()

25.8M/s

Obj[]

24.0M/s

binary

11.4M/s

Includes

392K/s

View exact numbers

Test name	Executions per second
✓ Map.has()	25,847,458 Ops/sec
Obj[]	24,041,526 Ops/sec
binary	11,393,058 Ops/sec
Includes	392,315 Ops/sec

Script Preparation code:

var array = [];
var map = new Map();
var obj = {};

for (var i = 0; i < 2000; i++){
  array.push(Math.random());
  map.set(i,true);
  obj[i]=true;
}
var sorted = array.sort()

function binaryIndexOf(searchElement) {

 
    var minIndex = 0;
    var maxIndex = this.length - 1;
    var currentIndex;
    var currentElement;
 
    while (minIndex <= maxIndex) {
        currentIndex = (minIndex + maxIndex) / 2 | 0;
        currentElement = this[currentIndex];
 
        if (currentElement < searchElement) {
            minIndex = currentIndex + 1;
        }
        else if (currentElement > searchElement) {
            maxIndex = currentIndex - 1;
        }
        else {
            return currentIndex;
        }
    }
 
    return -1;
}

Tests:

Includes
sorted.includes(5)
binary
binaryIndexOf.call(sorted, 5)
Map.has()
map.has(5);
Obj[]
obj[5]