Run results for: JSON.parse vs string.split

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_0_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/131.0.6778.73 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 131

Operating system: iOS 18.0.0

Device Platform: Mobile

Date tested: one year ago

String.split

7K/s

JSON.parse

5K/s

View exact numbers

Test name	Executions per second
✓ String.split	6,839 Ops/sec
JSON.parse	5,096 Ops/sec

Script Preparation code:

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

Tests:

JSON.parse
JSON.parse(str);
String.split
str.split(',')