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for loop vs array map
(version: 1)
Comparing performance of:
for loop vs Array.prototype.map vs for loop using a sparse array
Created:
one year ago
by:
Guest
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Tests:
for loop
const numbers = Array(100000).fill(0); for (let i = 0; i < numbers.length; i++) { numbers[i] = i; } const doubled = Array(numbers.length).fill(null); for (let i = 0; i < numbers.length; i++) { doubled[i] = numbers[i] * 2; }
Array.prototype.map
const numbers = Array(100000).fill(0); for (let i = 0; i < numbers.length; i++) { numbers[i] = i; } const doubled = numbers.map((x) => x * 2);
for loop using a sparse array
const numbers = Array(100000).fill(0); for (let i = 0; i < numbers.length; i++) { numbers[i] = i; } const doubled = Array(numbers.length); for (let i = 0; i < numbers.length; i++) { doubled[i] = numbers[i] * 2; }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
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Test case name
Result
for loop
Array.prototype.map
for loop using a sparse array
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
3 months ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:146.0) Gecko/20100101 Firefox/146.0
Browser/OS:
Firefox 146 on Mac OS X 10.15
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<iframe src="https://measurethat.net/Embed?id=623990" width="100%" height="500px"></iframe>
Test name
Executions per second
for loop
2179.9 Ops/sec
Array.prototype.map
1829.4 Ops/sec
for loop using a sparse array
2536.6 Ops/sec
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for loop vs Array.prototype.map
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