Run results for: substring vs slice

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0

Browser: Firefox 78

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
substring	104500600.0 Ops/sec
slice	103436100.0 Ops/sec

Tests:

substring
let str= "name, phone, address, zip, "; let newStr = str.substring(0, str.length - 1);
slice
let str= "name, phone, address, zip, "; let newStr = str.slice(0, -2);