Run results for: String.indexOf vs String.replace

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; GM1910) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.134 Mobile Safari/537.36

Browser: Chrome Mobile 91

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
String indexOf	2227064.5 Ops/sec
String replace	1214647.4 Ops/sec

Script Preparation code:

var genes = '-AKR1C2--AMH--AMHR2--AR--ARX--ATRX--B9D1--CBX2--CEP41--CYB5A--CYP11A1--CYP11B1--CYP17A1--CYP19A1--DHCR7--DHH--DMRT1--DYNC2H1--FRAS1--FREM2--GATA4--GRIP1--HOXA13--HSD17B3--HSD3B2--LHCGR--MAMLD1--MAP3K1--MKKS--NEK1--NR0B1--NR3C1--NR5A1--POR--RIPK4--ROR2--RSPO1--SOX3--SOX9--SRD5A2--SRY--STAR--TCTN3--TSPYL1--DYNC2I1--WNT4--WT1--ZFPM2-';
var gene = 'LHCGR';

Tests:

String indexOf
var i = genes.indexOf('-' + gene + '-');
String replace
var i = genes.replace(/`${gene}`/i, gene);

Run results for: String.indexOf vs String.replace

Compare String.IndexOf and String.replace function

String indexOf

String replace