Run results for: includes vs. word starts with

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser: Chrome 134

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Includes	134633008.0 Ops/sec
Word starts with	14913088.0 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

/*your preparation JavaScript code goes here
To execute async code during the script preparation, wrap it as function globalMeasureThatScriptPrepareFunction, example:*/
async function globalMeasureThatScriptPrepareFunction() {
    // This function is optional, feel free to remove it.
    // await someThing();
}

Tests:

Includes
const str = 'abc def ghi'; str.toLowerCase().includes('de');
Word starts with
const str = 'abc def ghi'; str.toLowerCase().split(' ').some(word => word.startsWith('de'));

Run results for: includes vs. word starts with

Searching for a substring: check whether it appears anywhere in a source string, or whether it appears at the start of a word within the source string

Includes

Word starts with