Run results for: Check first character - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36

Browser: Chrome 101

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
regexp .test()	4185211.5 Ops/sec
String match	0.0 Ops/sec
Start startsWith	6917659.0 Ops/sec
String charAt	6991076.5 Ops/sec
String indexOf	7259267.0 Ops/sec

Script Preparation code:

var value = "Fourscore and seven years"

Tests:

regexp .test()
/^F.*/.test(value)
String match
value.matches(/^F.*/)
Start startsWith
value.startsWith('F')
String charAt
value[0]==='F'
String indexOf
value.indexOf('F')===0

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