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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. Do not use it in old or new projects. Pages or Web apps using it may break 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.
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 2017 Draft (ECMA-262) The definition of 'arguments object' in that specification. |
Draft | arguments object |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |