Benchmark: startsWith vs === (v2)

Script Preparation code:

function get_data (){
const a = Array(1000), b = Array(1000) 
for(let i=0; i<1000; ++i)
  {
    const v = Math.random().toPrecision(50)
    a[i] = v.slice();
    b[i] = v.slice();
  }
  return [a, b]
}

Tests:

.startsWith() (same values)
{ const [a, b] = get_data() let test = true for(let j=0; j<1000; ++j) for(let i=0; i<1000; ++i) test &= a[i].startsWith(b[i]) if (test === true) test = false; }
.startsWith() (different values)
{ const [a, b] = get_data() let test = true for(let j=1; j<1000; ++j) for(let i=0; i<1000; ++i) test |= a[i].startsWith(b[j]) if (test === true) test = false; }
=== (same values)
{ const [a, b] = get_data() let test = true for(let j=0; j<1000; ++j) for(let i=0; i<1000; ++i) test &= a[i] === b[i] if (test === true) test = false; }
=== (different values)
{ const [a, b] = get_data() let test = true for(let j=1; j<1000; ++j) for(let i=0; i<1000; ++i) test |= a[i] === b[j] if (test === true) test = false; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
.startsWith() (same values)
.startsWith() (different values)
=== (same values)
=== (different values)

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36

Browser/OS: Chrome 149 on Linux

View result in a separate tab

Test name	Executions per second
.startsWith() (same values)	14.7 Ops/sec
.startsWith() (different values)	142.9 Ops/sec
=== (same values)	427.4 Ops/sec
=== (different values)	219.5 Ops/sec

Related benchmarks:

startsWith vs === (v2) (version: 2)

Comparing performance of: .startsWith() (same values) vs .startsWith() (different values) vs === (same values) vs === (different values)

Created: one month ago by: Registered User

Jump to the latest result

.startsWith() (same values)

.startsWith() (different values)

=== (same values)

=== (different values)

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A