Run results for: Compare the ways to convert String to Number in JS

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.4

Device Platform: Mobile

Date tested: 3 months ago

Test name	Executions per second
Number	15.3 Ops/sec
parseInt	15.3 Ops/sec
>>0	539.4 Ops/sec
*1	526.6 Ops/sec
~~	412.0 Ops/sec
+	174.2 Ops/sec

Script Preparation code:

const minimum = 1
const maximum = 1000
var arr = Array.from({ length: 1000000 }, () => Math.floor(Math.random() * (maximum - minimum + 1)) + minimum)

Tests:

Number
return arr.map((el) => Number(el))
parseInt
return arr.map((el) => parseInt(el))
>>0
return arr.map((el) => el >> 0)
*1
return arr.map((el) => el * 1)
~~
return arr.map((el) => ~~el)
+
return arr.map((el) => +el)

Run results for: Compare the ways to convert String to Number in JS

Compare the most popular ways to convert string to number

Number

parseInt

>>0

*1

~~

+