arguments.length

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La propiedad arguments.length contiene el número de argumentos pasados a una función.

Sintaxis

arguments.length

Descripción

La propiedad arguments.length devuelve el número total de argumentos pasados a una función. Esto puede ser más o menos que el número de parametros definidos. (Véase Function.length).

Ejemplos

Usando arguments.length

En este ejemplo definimos una función que puede sumar dos o más números.

function adder(base /*, n2, ... */) {
  base = Number(base);
  for (var i = 1; i < arguments.length; i++) {
    base += Number(arguments[i]);
  }
  return base;
}

Tenga en cuenta la diferencia entre Function.length y arguments.length

Especificaciones

Especificación Estado Comentario
ECMAScript 1st Edition (ECMA-262) Standard Definición inicial. Implementado en JavaScript 1.1
ECMAScript 5.1 (ECMA-262)
La definición de 'Arguments Object' en esta especificación.		 Standard  
ECMAScript 2015 (6th Edition, ECMA-262)
La definición de 'Arguments Exotic Objects' en esta especificación.		 Standard  
ECMAScript Latest Draft (ECMA-262)
La definición de 'Arguments Exotic Objects' en esta especificación.		 Draft  

Compatibilidad con los navegadores

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Véase también

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