Run results for: Testing lastIndexOf vs split+pop

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:108.0) Gecko/20100101 Firefox/108.0

Browser: Firefox 108

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
lastIndexOf	127871.5 Ops/sec
split+pop	122103.0 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);