Issue
I have a closure, and I want to access the arguments to the closure from inside the closure. Is this possible?
function outerFunction (param1, param2) {
// Returns [param1, param2, [param1, param2]]
return function innerFunction () { return [param1, param2, arguments] }
}
// [1, 2, [1, 2]]
console.log(outerFunction(1, 2)(3, 4));Solution
arguments is a special beast, and follows different rules in sloppy mode than in strict mode. It is array-like, but not a real array. But it is not necessary to use it. Just use rest parameter syntax:
function outerFunction (param1, param2) {
return function innerFunction (...args) {
return [param1, param2, args];
};
}
let result = outerFunction(1, 2)(3, 4);
console.log(result); // [1, 2, [3, 4]]Answered By – trincot
Answer Checked By – David Goodson (BugsFixing Volunteer)