Benchmark: Javascript string.endsWith vs string.slice and triple equal checking vs hardcoded index and triple equal, comparing a single character

Script Preparation code:

const value = "ABCDEF...WXYZ"
const ending = "Z"

function compareEndsWith(val, comparator) {
  return val.endsWith(comparator)
}
function compareSliceMethod(val, comparator) {
  const thingToCompare = val.slice(-1)
  return thingToCompare === comparator
}
function compareByIndex(val, comparator) {
	return value[12] === comparator
}

Tests:

endWith
const value = "ABCDEF...WXYZ" const ending = "Z" compareEndsWith(value, ending)
slice
const value = "ABCDEF...WXYZ" const ending = "Z" compareSliceMethod(value, ending)
hardcoded index
const value = "ABCDEF...WXYZ" const ending = "Z" compareByIndex(value, ending)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
endWith
slice
hardcoded index

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3.1 Safari/605.1.15

Browser/OS: Safari 18 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
endWith	66832708.0 Ops/sec
slice	334994592.0 Ops/sec
hardcoded index	415152960.0 Ops/sec

Related benchmarks:

Javascript string.endsWith vs string.slice and triple equal checking vs hardcoded index and triple equal, comparing a single character (version: 1)

Comparing performance of: endWith vs slice vs hardcoded index

Created: one year ago by: Guest

Jump to the latest result

endWith

slice

hardcoded index

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A