Run results for: String casting test

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/113.0

Browser: Firefox 113

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
String function	3944.2 Ops/sec
toString method	5464.9 Ops/sec
Template string	4699.6 Ops/sec
String add	3198.1 Ops/sec

Script Preparation code:

function randstring() {
  const l = Math.ceil(Math.random()*16+5)
  const alphabet = "abcdefghijklmnopqrstuvwxyz"
  let a = []
  for (let i=0; i<l; i++) {
   	 a.push(alphabet[Math.floor(Math.random()*alphabet.length)])
  }
  
  return a.join("")
}

var strings = []
var numbers = []
var arrays = []
for (let i=0; i<1000; i++) {
 	strings.push(randstring())
    numbers.push(Math.floor(Math.random()*10000))
    arrays.push([
      randstring(),
      Math.floor(Math.random()*10000)
    ])
}
var testdata = [strings, numbers, arrays]

Tests:

String function
let result = testdata.map( (data) => { data.map( (value) => String(value)) })
toString method
let result = testdata.map( (data) => { data.map( (value) => value.toString()) })
Template string
let result = testdata.map( (data) => { data.map( (value) => `${value}`) })
String add
let result = testdata.map( (data) => { data.map( (value) => ""+value) })

Run results for: String casting test

Test which string casting method is fastest

String function

toString method

Template string

String add