Benchmark: Array Initialization: Constructor vs Literal

Array Initialization: Constructor vs Literal (version: 7)

This test should measure performance of different array initialization types

Comparing performance of: Literal with push vs Constructor() with push vs Constructor(times) with push vs Literal with index vs Constructor() with index vs Constructor(times) with index vs Literal with push and overflow vs Constructor() with push and overflow vs Constructor(times) with push and overflow vs Literal with index and overflow vs Constructor() with index and overflow vs Constructor(times) with index and overflow

Created: 7 years ago by: Registered User

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Script Preparation code:

var times = 500;

var noOverflow = 0,
    overflow = 1;

Tests:

Literal with push
var arr = [], arrSize = times + noOverflow; for (var i = 0; i <= arrSize; i++) { arr.push(1337); }
Constructor() with push
var arr = new Array(), arrSize = times + noOverflow; for (var i = 0; i <= arrSize; i++) { arr.push(1337); }
Constructor(times) with push
var arr = new Array(times), arrSize = times + noOverflow; for (var i = 0; i <= arrSize; i++) { arr.push(1337); }
Literal with index
var arr = [], arrSize = times + noOverflow; for (var i = 0; i <= arrSize; i++) { arr[i] = 1337; }
Constructor() with index
var arr = new Array(), arrSize = times + noOverflow; for (var i = 0; i <= arrSize; i++) { arr[i] = 1337; }
Constructor(times) with index
var arr = new Array(times), arrSize = times + noOverflow; for (var i = 0; i <= arrSize; i++) { arr[i] = 1337; }
Literal with push and overflow
var arr = [], arrSize = times + overflow; for (var i = 0; i <= arrSize; i++) { arr.push(1337); }
Constructor() with push and overflow
var arr = new Array(), arrSize = times + overflow; for (var i = 0; i <= arrSize; i++) { arr.push(1337); }
Constructor(times) with push and overflow
var arr = new Array(times), arrSize = times + overflow; for (var i = 0; i <= arrSize; i++) { arr.push(1337); }
Literal with index and overflow
var arr = [], arrSize = times + overflow; for (var i = 0; i <= arrSize; i++) { arr[i] = 1337; }
Constructor() with index and overflow
var arr = new Array(), arrSize = times + overflow; for (var i = 0; i <= arrSize; i++) { arr[i] = 1337; }
Constructor(times) with index and overflow
var arr = new Array(times), arrSize = times + overflow; for (var i = 0; i <= arrSize; i++) { arr[i] = 1337; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Literal with push
Constructor() with push
Constructor(times) with push
Literal with index
Constructor() with index
Constructor(times) with index
Literal with push and overflow
Constructor() with push and overflow
Constructor(times) with push and overflow
Literal with index and overflow
Constructor() with index and overflow
Constructor(times) with index and overflow

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 7 years ago)

User agent: Mozilla/5.0 (Android 5.0.1; Mobile; rv:47.0) Gecko/47.0 Firefox/47.0

Browser/OS: Firefox Mobile 47 on Android 5.0.1

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Test name	Executions per second
Literal with push	29293.9 Ops/sec
Constructor() with push	35772.5 Ops/sec
Constructor(times) with push	17113.1 Ops/sec
Literal with index	27947.1 Ops/sec
Constructor() with index	32031.6 Ops/sec
Constructor(times) with index	23458.8 Ops/sec
Literal with push and overflow	25828.3 Ops/sec
Constructor() with push and overflow	31200.4 Ops/sec
Constructor(times) with push and overflow	15159.5 Ops/sec
Literal with index and overflow	28662.3 Ops/sec
Constructor() with index and overflow	32597.1 Ops/sec
Constructor(times) with index and overflow	24358.1 Ops/sec

Array Initialization: Constructor vs Literal (version: 7)

This test should measure performance of different array initialization types

Created: 7 years ago by: Registered User

Jump to the latest result

Literal with push

Constructor() with push

Constructor(times) with push

Literal with index

Constructor() with index

Constructor(times) with index

Literal with push and overflow

Constructor() with push and overflow

Constructor(times) with push and overflow

Literal with index and overflow

Constructor() with index and overflow

Constructor(times) with index and overflow

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A