Run results for: array size 3

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.79 Safari/537.36

Browser: Chrome 67

Operating system: Windows 7

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
undefined	32.0 Ops/sec
defined	17.7 Ops/sec

Tests:

undefined
let myArray = []; for (let i=0; i<102400; i++) { myArray.push("foo" + i); }
defined
let myArray = new Array(102400); for (let i=0; i<102400; i++) { myArray.push("foo" + i); }