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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.36

Browser: Chrome 151

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 7 days ago

Test name	Executions per second
Number	108.6 Ops/sec
parseInt	97.8 Ops/sec
>>0	160.3 Ops/sec
*1	160.6 Ops/sec
~~	146.9 Ops/sec
+	155.5 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

~~

+