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concat vs unshift vs spread (huge arrays)
(version: 1)
Comparing performance of:
unshift vs concat vs spread
Created:
one year ago
by:
Guest
Jump to the latest result
HTML Preparation code:
<!--your preparation HTML code goes here-->
Script Preparation code:
var array = new Array(1000).fill(1);
Tests:
unshift
array.unshift(0);
concat
array = [0].concat(array)
spread
array = [0,...array]
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
unshift
concat
spread
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
6 months ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:143.0) Gecko/20100101 Firefox/143.0
Browser/OS:
Firefox 143 on Windows
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Test name
Executions per second
unshift
1059530.1 Ops/sec
concat
57.7 Ops/sec
spread
9.3 Ops/sec
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