The Number.parseInt()
static method parses a string argument and returns an integer of the specified radix or base.
The Number.parseInt()
static 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 |
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Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | Deno | Node.js | ||
parseInt |
34 | 12 | 25 | 21 | 9 | 34 | 25 | 21 | 9 | 2.0 | 37 | 1.0 | 0.12.0 |
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/parseInt