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Run results for:
concat vs unshift vs spread (huge arrays)
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:143.0) Gecko/20100101 Firefox/143.0
Browser:
Firefox 143
Operating system:
Windows
Device Platform:
Desktop
Date tested:
6 months ago
Test name
Executions per second
unshift
1059530.1 Ops/sec
concat
57.7 Ops/sec
spread
9.3 Ops/sec
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]