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Run results for: Array .push() vs .unshift() 2

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.81 Safari/537.36
Chrome 69
Windows
Desktop
5 years ago
Test name Executions per second
.unshift() 9751.2 Ops/sec
.push() 5480969.0 Ops/sec
.push() preallocated array 4615850.0 Ops/sec
.unshift() preallocated array 41.9 Ops/sec
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Script Preparation code:
Tests:

  • .unshift()

  • .push()

  • .push() preallocated array

  • .unshift() preallocated array