Run results for: JSON.parse vs dataview vs typedarray

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; rv:122.0) Gecko/20100101 Firefox/122.0

Browser: Firefox 122

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

TypedArray

5.7M/s

dataview

5.5M/s

JSON

387K/s

View exact numbers

Test name	Executions per second
✓ TypedArray	5,724,791 Ops/sec
dataview	5,497,054 Ops/sec
JSON	386,774 Ops/sec

Script Preparation code:

var intObj = {alpha:12345678,beta:12345678,charlie:12345678,delta:12345678,foxtrot:12345678}
var typedArray = new Int32Array(12345678,12345678,12345678,12345678,12345678)
var buffer = new ArrayBuffer(20)
var dv = new DataView(buffer)
dv.setInt32(0,12345678)
dv.setInt32(4,12345678)
dv.setInt32(8,12345678)
dv.setInt32(12,12345678)
dv.setInt32(16,12345678)

Tests:

JSON
let stringy = JSON.stringify(intObj); let parsed = JSON.parse(stringy); let a; a = parsed;
TypedArray
let newBuffer = typedArray.buffer let parsedBuffer = new Int32Array(newBuffer) let b; b = parsedBuffer;
dataview
let dvBuffer = dv.buffer let newView = new DataView(dvBuffer) let c; c = newView;