Run results for: JSON.parse() vs. eval()

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/615.1.18.100.1 (KHTML, like Gecko) Ultralight/1.4.0 Version/16.4.1 Safari/615.1.18.100.1

Browser: Safari 16

Operating system: Windows

Device Platform: Desktop

Date tested: 5 months ago

JSON.parse()

6.4M/s

eval()

1.7M/s

View exact numbers

Test name	Executions per second
✓ JSON.parse()	6,443,120 Ops/sec
eval()	1,651,251 Ops/sec

Script Preparation code:

var jsonString = '{"key1": "val1", "key2": 7}'

Tests:

JSON.parse()
var dummy = JSON.parse(jsonString);
eval()
eval('var dummy = ' + jsonString);