Function isArguments

Checks if the given value is an arguments object.

This function tests whether the provided value is an arguments object or not. It returns true if the value is an arguments object, and false otherwise.

This function can also serve as a type predicate in TypeScript, narrowing the type of the argument to an arguments object.

const args = (function() { return arguments; })();
const strictArgs = (function() { 'use strict'; return arguments; })();
const value = [1, 2, 3];

console.log(isArguments(args)); // true
console.log(isArguments(strictArgs)); // true
console.log(isArguments(value)); // false
Copy