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Deprecated
This feature has been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped. Avoid using it and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The function.arguments property refers to an an array-like object corresponding to the arguments passed to a function. Use the simple variable arguments instead. This property is forbidden in strict model due to taill call optimization.

Description

The syntax function.arguments is deprecated. The recommended way to access the arguments object available within functions is simply to refer to the variable arguments.

In the case of recursion, i.e. if function f appears several times on the call stack, the value of f.arguments represents the arguments corresponding to the most recent invocation of the function.

The value of the arguments property is normally null if there is no outstanding invocation of the function in progress (that is, the function has been called but has not yet returned.

Examples

function f(n) { g(n - 1); }

function g(n) {
  console.log('before: ' + g.arguments[0]);
  if (n > 0) { f(n); }
  console.log('after: ' + g.arguments[0]);
}

f(2);

console.log('returned: ' + g.arguments);

// Output

// before: 1
// before: 0
// after: 0
// after: 1
// returned: null

Specifications

Specification Status Comment
ECMAScript 1st Edition (ECMA-262) Standard Initial definition. Implemented in JavaScript 1.0. Deprecated in favor of arguments in ES3.
ECMAScript 5.1 (ECMA-262)
The definition of 'arguments object' in that specification.
Standard arguments object
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'arguments object' in that specification.
Standard arguments object
ECMAScript Latest Draft (ECMA-262)
The definition of 'arguments object' in that specification.
Living Standard arguments object

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes Yes Yes Yes Yes Yes
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic support Yes Yes Yes Yes Yes Yes Yes

See also

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 최종 변경: rwaldron,