Benchmark: Check first and last char loop charAt startsWith slice regex.test

Script Preparation code:

var pat = "/^http.?:\/\/.+\.com/";
var count = 1000;

Tests:

index
for (var i = 0; i < count; i++) { pat[0] === "/" && pat[pat.length - 1] === "/"; }
charAt
for (var i = 0; i < count; i++) { pat.charAt(0) === "/" && pat.charAt(pat.length - 1) === "/"; }
startsWith & endsWith
for (var i = 0; i < count; i++) { pat.startsWith("/") && pat.endsWith("/"); }
slice
for (var i = 0; i < count; i++) { pat.slice(0, 1) === "/" && pat.slice(-1) === "/"; }
regex test
for (var i = 0; i < count; i++) { (/^\/.+\/$/).test(pat); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
index
charAt
startsWith & endsWith
slice
regex test

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:122.0) Gecko/20100101 Firefox/122.0

Browser/OS: Firefox 122 on Windows

View result in a separate tab

charAt

2.5M/s

slice

2.4M/s

index

2.4M/s

startsWith & endsWith

2.4M/s

regex test

51K/s

View exact numbers

Test name	Executions per second
✓ charAt	2,456,048 Ops/sec
slice	2,438,018 Ops/sec
index	2,433,405 Ops/sec
startsWith & endsWith	2,356,459 Ops/sec
regex test	50,709 Ops/sec

Check first and last char loop charAt startsWith slice regex.test (version: 0)

Comparing performance of: `index vs charAt vs startsWith & endsWith vs slice vs regex test`

Created: 2 years ago by: Guest

Go to the latest result

index

charAt

startsWith & endsWith

slice

regex test

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Check first and last char loop charAt startsWith slice regex.test (version: 0)

Comparing performance of: index vs charAt vs startsWith & endsWith vs slice vs regex test

Created: 2 years ago by: Guest

Go to the latest result

index

charAt

startsWith & endsWith

slice

regex test

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `index vs charAt vs startsWith & endsWith vs slice vs regex test`