Run results for: JSON.parse vs string.split

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.1

Device Platform: Mobile

Date tested: one year ago

String.split

5K/s

JSON.parse

3K/s

View exact numbers

Test name	Executions per second
✓ String.split	5,068 Ops/sec
JSON.parse	3,386 Ops/sec

Script Preparation code:

var array = new Array(5000).fill('1').map(() => Math.random().toString());
var str = JSON.stringify(array);

Tests: