Benchmark: str[i] before startsWith

Script Preparation code:

function get_data(){
  const res = "abc-def-ghi-\u26C6-jkl-mno"
  return res
}

Tests:

[MATCH] check str[i] before startsWith
const str = get_data() const res = str[12] === "\u26C6" && str.startsWith("abc-def-ghi-\u26C6")
[MATCH] startsWith immediatly
const str = get_data() const res = str.startsWith("abc-def-ghi-\u26C6")
[NOT MATCH] check str[i] before startsWith
const str = get_data() const res = str[14] === "\u26C6" && str.startsWith("abc-def-ghi-x-\u26C6")
[NOT MATCH] startsWith immediatly
const str = get_data() const res = str.startsWith("abc-def-ghi-x-\u26C6")

Rendered benchmark preparation results:

Previous results

Test case name	Result
[MATCH] check str[i] before startsWith
[MATCH] startsWith immediatly
[NOT MATCH] check str[i] before startsWith
[NOT MATCH] startsWith immediatly

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Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:95.0) Gecko/20100101 Firefox/95.0

Browser/OS: Firefox 95 on Windows

Test name	Executions per second
[MATCH] check str[i] before startsWith	50734710.0 Ops/sec
[MATCH] startsWith immediatly	50918310.0 Ops/sec
[NOT MATCH] check str[i] before startsWith	1400821000.0 Ops/sec
[NOT MATCH] startsWith immediatly	52352710.0 Ops/sec

str[i] before startsWith (version: 0)