Run results for: Testing lastIndexOf vs split+pop

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36

Browser: Chrome 75

Operating system: Mac OS X 10.14.4

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
lastIndexOf	90818.3 Ops/sec
split+pop	94750.2 Ops/sec

Script Preparation code:

var str="abc:cde:def:efg:ghi";

Tests:

lastIndexOf
const lastIndexOfDot = str.lastIndexOf(':'); let snip; if (lastIndexOfDot != -1) { snip = str.substr(lastIndexOfDot + 1); } console.log(snip);
split+pop
let snip = str.split(':').pop(); console.log(snip);