CODEWITHSUNDEEP
javascriptfunctionconstants
Natdrip
Natdrip

Reputation: 1183

overriding const function declaration as key in javascript

Hi and thank you in advance

I am wondering if there is a way to override a const function?

example:

const n = function(){alert('bob')};

so is it possible to reference the function something like this:

n.function = function(){alert('for apples')};

What I did here doesn't work.

Thanks again

Upvotes: 0

Views: 2366

Answers (2)

kidA
kidA

Reputation: 1377

From the docs

The value of a constant cannot change through re-assignment, and it can't be redeclared.

Since functions are objects though you can add properties to them. Therefore, n.function = function(){alert('for apples')}; will work since you are appending a property called function to your n object. That means that you can execute that function by doing n.function() as Nina Scholz suggested in the comments.

Upvotes: 4

snek
snek

Reputation: 2161

You can't override the value of a const-declared variable. Just use let instead.

let n = function() { alert('bob'); };

n();

n = function() { alert('for apples'); };

n();

Upvotes: 4

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