(function(x){ delete x; return x; })(1);

#1

// Immediately Invoked Function Expression

It should return “Error” or “Undefined” because delete operator deletes the x properties.

How the answer is 1 ?

#2

Hi @theonlyritik_3b4a4a5eb9f6c783,

If executed this --> (function(x){ delete x; })(1);
Returns --> undefined, since there is no return statement hence value of x is deleted and hence this returns undefined . Side Note : we are not explicitly returning anything here.

If we execute --> (function(x){ delete x; return x; })(1);
Returns --> 1 , as it fetches the value of x. We are returning x explicitly here.

#3

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