Function.arguments
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. 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 array-like object corresponding to the arguments passed to a function. Use the simple variable arguments
instead. This property is restricted to non-strict functions.
Description
The syntax function.arguments
is deprecated. The recommended way to access the arguments
object available within functions is 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
Using the arguments object
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
Not part of any standard. Deprecated in favor of arguments
in ECMAScript 3.
Browser compatibility
BCD tables only load in the browser