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El método Number.parseInt() parses un argumento tipo string y retorna un entero de la base especificada.


Number.parseInt(string,[ radix ])


The value to parse. If the string argument is not a string, then it is converted to a string (using the ToString abstract operation). Leading whitespace in the string argument is ignored.
An integer between 2 and 36 that represents the radix (the base in mathematical numeral systems) of the above mentioned string. Specify 10 for the decimal numeral system commonly used by humans. Always specify this parameter to eliminate reader confusion and to guarantee predictable behavior. Different implementations produce different results when a radix is not specified, usually defaulting the value to 10.

Return value

An integer number parsed from the given string. If the first character cannot be converted to a number, NaN is returned.


Este método tiene la misma funcionalidad que la función global parseInt():

Number.parseInt === parseInt; // true

and is part of ECMAScript 2015 (its purpose is modularization of globals). Please see parseInt() for more detail and examples.


if (Number.parseInt === undefined)
    Number.parseInt = window.parseInt;


Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Number.parseInt' in that specification.
Standard Initial definition.
ECMAScript Latest Draft (ECMA-262)
The definition of 'Number.parseInt' in that specification.
Living Standard  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Soporte básico(Si)(Si)25No(Si)9
FeatureAndroidChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Soporte básico(Si)(Si)(Si)25No(Si)9

See also

Etiquetas y colaboradores del documento

 Colaboradores en esta página: conary
 Última actualización por: conary,