Benchmark: Reassignment of Var vs Const vs Let

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Script Preparation code:

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Tests:

Var
function foo() { var x = { value: 10 } x = { value: 11 } }
Const
function foo() { const x = { value: 10 } x.value = 11 }
Let
function foo() { let x = { value: 10 } x = { value: 11 } }
Const from inline function
function foo() { const bar = () => { const x = {value: 11} } const y = bar() }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Var
Const
Let
Const from inline function

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 11 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser/OS: Chrome 137 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Var	284707168.0 Ops/sec
Const	249601200.0 Ops/sec
Let	261721552.0 Ops/sec
Const from inline function	259947328.0 Ops/sec

Related benchmarks:

Reassignment of Var vs Const vs Let (version: 2)

Comparing performance of: Var vs Const vs Let vs Const from inline function

Created: 11 months ago by: Registered User

Jump to the latest result

Var

Const

Let

Const from inline function

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A