Benchmark: Regex vs .indexOf with more complex expressions

HTML Preparation code:

<div></div>

Script Preparation code:

const data = window.data = [
    "Jørpeland",
    "Stavanger via UiS-SUS",
    "Stavanger",
    "Randaberg via UiS",
    "796",
    "776",
    "Oslo bussterminal",
    "Sandnes via SUS-UiS",
    "Forus via Stavanger",
    "Åsveien via Sandvika",
    "Risavika via Stavanger-Varatun",
    "Stavanger via UiS",
    "Flyplassen",
    "Risavika via Stavanger-Smeaheia",
    "Haugesund bussterminal",
    "Hjelmeland",
    "Kristiansand rutebilstasjon",
    "Dale",
    "Bogafjell",
    "Mortavika",
    "Sundelia via Stavanger",
    "Sandnes via flyplassen",
    "Viste Hageby via Stavanger",
    "B775-BE",
    "Madlakrossen via SUS-Madlamark",
    "Sandnes",
    "Kvernaland - Øksnavadporten",
    "Bergen",
    "762",
    "Bleikemyr via Haugesund sentrum",
    "Hinna via SUS",
    "Grinde via Amanda",
    "Sandnes via Stavanger-Smeaheia",
    "Stokka",
    "Etne",
    "Skaarlia",
    "Stavanger via SUS",
    "Amanda via Haugesund sentrum",
    "3054",
    "Ålgård - Fiskebekk",
    "Skudeneshavn via Kopervik og Veavågen",
    "Vassøy - Kalvøy",
    "Sandnes via UiS",
    "Madlakrossen via SUS-Tjensvoll",
    "Vassøy",
    "779",
    "Haugesund via Kopervik",
    "Hovland - Egersund",
    "Rosenli via Madlamark-SUS",
    "3053",
    "Kleppekrossen - Klepp stasjon",
    "Stokka via UiS",
    "797",
    "778",
    "Haugesund via Amanda",
    "Randaberg",
    "Madlasandnes",
    "Hundvåg vest/øst",
    "Vikjå",
    "Haugesund via Veavågen og Kopervik",
    "Stavanger via Madlamark-SUS",
    "Rosenli via Tjensvoll-SUS",
    "Stavanger Airport via Forum",
    "Heng",
    "Ormøy",
    "Skipavik",
    "Vormedal via Haugesund sentrum",
    "Godeset via SUS",
    "Riskafeltet - Hommersåk",
    "Sandnes - Hommersåk",
    "Grødem",
    "Haugesund",
    "Gausel stasjon",
    "Sola via UiS",
    "Arsvågen",
    "Austre Åmøy via Bru-Vestre Åmøy kai",
    "Kristiansand/Stavanger",
    "Ølen via Vikebygd",
    "Hundvåg øst/vest",
    "Åkrehamn via Kopervik",
    "Sandnes via Stavanger-Varatun",
    "Nedstrand",
    "Ropeid - Ølen",
    "Forus - Ålgård - Fiskebekk",
    "Ravndal - Oltedal - Gilja",
    "3052",
    "Egersund - Hauge i Dalane",
    "Stavanger sentrum via Forum",
    "Haugesund via Nes",
    "Kolnes via Amanda",
    "3056",
    "3051",
    "Hjelmeland via Fister",
    "3152",
    "B775-BF",
    "Rennesøy via Randaberg",
    "Tananger via flyplassen",
    "Ropeid - Sauda",
    "Kristiansand/Oslo",
    "Vardenes",
    "Ganddal",
    "Hundvåg",
    "Bryne",
    "Tananger",
    "Solbakk via Voster",
    "Fogn",
    "Jåttåvågen via SUS",
    "Mekjarvik",
    "Tau",
    "Stavanger via Randaberg",
    "Nesvik - Skipavik",
    "Jelsa",
    "Hebnes"
]

Tests:

Regex
const TOTAL_STRINGS = window.TOTAL_STRINGS; const data = window.data; let x = 0; while (x < TOTAL_STRINGS) { const str = data[x++]; const match = str.match(/^(.+?(?:(?=\b(via|mot)\b)|(?!.*\b(via|mot)\b).*$))/); const result = match ? match[0].trim() : str; }
.indexOf
const TOTAL_STRINGS = window.TOTAL_STRINGS; const data = window.data; const match = ['via', 'mot']; let x = 0; while (x < TOTAL_STRINGS) { const str = data[x++].split(' '); let k = 0; let i = -1; while (k < match.length && i === -1) { i = str.indexOf(match[k++]); } const result = (i !== -1 ? str.slice(0, i - 1) : str).join(' '); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Regex
.indexOf

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Android 11; Mobile; rv:103.0) Gecko/103.0 Firefox/103.0

Browser/OS: Firefox Mobile 103 on Android

View result in a separate tab

Test name	Executions per second
Regex	777440.8 Ops/sec
.indexOf	771750.3 Ops/sec

Regex vs .indexOf with more complex expressions (version: 2)

Find where "via" or "mot" is in a string, and return all words from the start of the string to that point. Otherwise, return the entire string.

Comparing performance of: Regex vs .indexOf

Created: 3 years ago by: Registered User

Jump to the latest result

Regex

.indexOf

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A