Benchmark: tests fir startwith polyfills

Script Preparation code:

var searchInMe = 'IstartwithIstartwithIstartwithIstartwithIstartwithIstartwithIstartwithIstartwithIstartwithIstartwithIstartwithIstartwith';
var searchInMe2 = 'InotstartwithInotstartwithInotstartwithInotstartwithInotstartwithInotstartwithInotstartwithInotstartwithInotstartwith11';
var searchForMe = 'Istartwith';
var searchForMeEr = /^Istartwith/;

Tests:

startWith native
searchInMe.startsWith(searchForMe); searchInMe2.startsWith(searchForMe);
indexof
searchInMe.indexOf(searchForMe) === 0; searchInMe2.indexOf(searchForMe) === 0;
lastIndexOf
searchInMe.lastIndexOf(searchForMe, 0) === 0; searchInMe2.lastIndexOf(searchForMe, 0) === 0;
regex
searchForMeEr.test(searchInMe); searchForMeEr.test(searchInMe2);
substr
searchInMe.substr(0, searchForMe.length) === searchForMe; searchInMe2.substr(0, searchForMe.length) === searchForMe;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
startWith native
indexof
lastIndexOf
regex
substr

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 7 years ago)

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36

Browser/OS: Chrome 55 on Windows 7

View result in a separate tab

Test name	Executions per second
startWith native	1787426.0 Ops/sec
indexof	1217303.0 Ops/sec
lastIndexOf	1575813.0 Ops/sec
regex	1694450.0 Ops/sec
substr	1352718.0 Ops/sec

tests fir startwith polyfills (version: 0)

Comparing performance of: startWith native vs indexof vs lastIndexOf vs regex vs substr

Created: 7 years ago by: Guest

Jump to the latest result

startWith native

indexof

lastIndexOf

regex

substr

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A