The Number.parseInt()
method parses a string argument and returns an integer of the specified radix or base.
The Number.parseInt()
method parses a string argument and returns an integer of the specified radix or base.
Number.parseInt(string) Number.parseInt(string, radix)
string
The value to parse, coerced to a string. Leading whitespace in this argument is ignored.
radix
Optional
An integer between 2
and 36
that represents the radix (the base in mathematical numeral systems) of the string
.
If radix
is undefined or 0
, it is assumed to be 10
except when the number begins with the code unit pairs 0x
or 0X
, in which case a radix of 16
is assumed.
An integer parsed from the given string
.
If the radix
is smaller than 2
or bigger than 36
, or the first non-whitespace character cannot be converted to a number, NaN
is returned.
This method has the same functionality as the global parseInt()
function:
Number.parseInt === parseInt // true
Its purpose is modularization of globals. Please see parseInt()
for more detail and examples.
Specification |
---|
ECMAScript Language Specification # sec-number.parseint |
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
parseInt |
34 |
12 |
25 |
No |
21 |
9 |
37 |
34 |
25 |
21 |
9 |
2.0 |
1.0 |
0.12.0 |
Number.parseInt
in core-js
Number
object it belongs to.parseInt()
method.
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/parseInt