Run results for: checking empty array

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36

Browser: Chrome 117

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
useing isArray	101267.8 Ops/sec
useing length	212250.8 Ops/sec

Script Preparation code:

const arr = [{
    a: 2,
    b: 4
}, {
    a: 3,
    b: 6
}, {
    a: 5,
    b: 9
}]
const emptyArr = []

Tests:

useing isArray
const arr = [{ a: 2, b: 4 }, { a: 3, b: 6 }, { a: 5, b: 9 }] const emptyArr = []; if(Array.isArray(arr)) console.log('array'); if(Array.isArray(emptyArr)) console.log('emptyArray');
useing length
const arr = [{ a: 2, b: 4 }, { a: 3, b: 6 }, { a: 5, b: 9 }]; const emptyArr = []; if(arr?.length) console.log('array'); if(emptyArr?.length) console.log('emptyArray');