Benchmark: concat vs spread operator vs push (object reference)

Script Preparation code:

class X { uuid = "0123456789ABCDEF" }

var array1 = []
for (let i = 0; i < 100; i++) {
  array1.push(new X())
}

var array2 = []
for (let i = 0; i < 100; i++) {
  array2.push(new X())
}

Tests:

concat
array1 = array1.concat(array2)
Spread operator
array1 = [...array1, ...array2]
push
array1.push(...array2)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
concat
Spread operator
push

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:75.0) Gecko/20100101 Firefox/75.0

Browser/OS: Firefox 75 on Ubuntu

View result in a separate tab

Test name	Executions per second
concat	278.2 Ops/sec
Spread operator	102.3 Ops/sec
push	104717.3 Ops/sec

concat vs spread operator vs push (object reference) (version: 0)

concat vs spread operator vs push (object reference) with array of 100 elements.

Comparing performance of: concat vs Spread operator vs push

Created: 4 years ago by: Guest

Jump to the latest result

concat

Spread operator

push

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A