arguments.length

La propietat arguments.length conté el número d'arguments passats a la funció.

Sintaxi

arguments.length

Descripció

La propietat arguments.length proporciona el número d'arguments passats a la funció. Aquest pot ser major o menor que el nombre total de paràmetres definits. (Vegeu Function.length).

Exemples

Utilitzar arguments.length

En aquest exemple definim una funció que pot afegir dos o més nombres.

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

Especificacions

Especificació Estat Comentaris
ECMAScript 1st Edition (ECMA-262) Standard Definició inicial. Implementat en JavaScript 1.1
ECMAScript 5.1 (ECMA-262)
The definition of 'Arguments Object' in that specification.		 Standard  
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Arguments Exotic Objects' in that specification.		 Standard  

Compatibilitat amb navegadors

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Característica Chrome Firefox (Gecko) Internet Explorer Opera Safari
Suport bàsic (Yes) (Yes) (Yes) (Yes) (Yes)
Característica Android Chrome per Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Suport bàsic (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)

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