Benchmark: Array Shallow Copy

Script Preparation code:

var arr = [];
for(let i=0;i<1000000;i++){
  arr[i]=Math.random();
}

Tests:

Object.values
let arr2 = Object.values(arr)
slice
let arr2 = arr.slice(0)
loop
let arrLength = arr.length; let arr2=new Array(arrLength); for(let i=0;i<arrLength;i++){ arr2[i]=arr[i] }
Concat
let arr2 = arr.concat([])
Array From
let arr2 = Array.from(arr)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object.values
slice
loop
Concat
Array From

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.109 Safari/537.36 OPR/84.0.4316.42

Browser/OS: Opera 84 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Object.values	8.6 Ops/sec
slice	445.3 Ops/sec
loop	9.4 Ops/sec
Concat	487.9 Ops/sec
Array From	459.7 Ops/sec

Array Shallow Copy (version: 0)

Comparing performance of: Object.values vs slice vs loop vs Concat vs Array From

Created: 2 years ago by: Registered User

Jump to the latest result

Object.values

slice

loop

Concat

Array From

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A