Run results for: slice vs substr vs substring (with no end index)

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/119.0.6045.169 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 119

Operating system: iOS 17.1

Device Platform: Mobile

Date tested: 2 years ago

substring

18.7M/s

slice

18.6M/s

substr

12.2M/s

View exact numbers

Test name	Executions per second
✓ substring	18,652,104 Ops/sec
slice	18,618,698 Ops/sec
substr	12,187,331 Ops/sec

Script Preparation code:

var example = 'there is no spoon'

Tests:

slice
var result = example.slice(10)
substr
var result = example.substr(10)
substring
var result = example.substring(10)

Run results for: slice vs substr vs substring (with no end index)

Compares slice, substr and substring to each other when there is only a start index

slice

substr

substring