Run results for: Joining strings

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0

Browser: Firefox 135

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

join

696/s

for loop concatenation

400/s

View exact numbers

Test name	Executions per second
✓ join	696 Ops/sec
for loop concatenation	400 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

/*your preparation JavaScript code goes here
To execute async code during the script preparation, wrap it as function globalMeasureThatScriptPrepareFunction, example:*/
const a = [];
async function globalMeasureThatScriptPrepareFunction() {
    // This function is optional, feel free to remove it.
    // await someThing();
  	for(let i = 0; i < 100000; i++) {
      a.push(Math.floor(Math.random() * 1000));
    }
}

Tests:

join
a.join('');
for loop concatenation
let b = ''; for(let j = 0; j < a.length; j++) { b += a[j]; }