CODEWITHSUNDEEP
javascript
user2019037
user2019037

Reputation: 762

Self execute function odd behaviour?

I have this self execute function that call itself:

(function a(x){
    if(x > 0){
        x--;
        console.log(x);
    }
    a(x);
})(5);
//outputs 4 3 2 1 0

This is correct behaviour . But if i pass this function to a variable how i can achieve the same behaviour?

var a = (function (x){
    if(x > 0){
        x--;
        console.log(x);
    }
    //a(x); outputs error
})(5);

Upvotes: -1

Views: 54

Answers (1)

James Sumners
James Sumners

Reputation: 14785

In the second case, the result of your Immediately Invoked Function Expression (IIFE), which will be undefined, is assigned to the variable a. Thus, a does not have a function associated with it.

Upvotes: 4

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