Run results for: String Concatenation with a predefined String Array set

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
concat (w/ spread operator)	2484601.5 Ops/sec
concat using for loop	179278.5 Ops/sec

Script Preparation code:

var arr = Array(100).fill('A');
var str = "";

AخA
 
var arr = Array(100).fill('A');var str = "";

Tests:

concat (w/ spread operator)
str.concat(...arr);
str.concat(...arr);
concat using for loop
for(let i=0; i<100; i++){ str.concat(arr[i]); }
for(let i=0; i<100; i++){
str.concat(arr[i]);
}