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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Browser: Chrome 124

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

substring

9.9M/s

slice

8.7M/s

substr

7.9M/s

View exact numbers

Script Preparation code:

var arr = [];
for(let i = 0; i < 100_000; i++) {
  arr.push('aaaaaaa');
}
var example = arr.join();

Tests: