Run results for: re-vs-index

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.81 Safari/537.36

Browser: Chrome 58

Operating system: Mac OS X 10.12.4

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
fastest re	1452537.2 Ops/sec
indexOf one by one	969276.8 Ops/sec
indexOf concat	1409672.5 Ops/sec

Script Preparation code:

var a = 'asrtarstarstarstarst';
var b = 'oienoienoienoienoin';
var c = 'arsoienaroistenaoristenaorisetnaorist';
var d = 'wfpqwfp;yuwflpywulfpywulfp';

var needle = 'abcdefg';
var re = new RegExp( needle, 'i' );

Tests:

fastest re
(a+b+c+d).search( re );
indexOf one by one
a.indexOf( needle ) b.indexOf( needle ) c.indexOf( needle ) d.indexOf( needle )
indexOf concat
(a+b+c+d).indexOf( needle )

Run results for: re-vs-index

fastest re

indexOf one by one

indexOf concat