- 1: NewYork, Singapore - 2: NewYork, NewYork - 3: undefined, Singapore - 4: Singapore, Singapore

##### Answer: 3 Due to hositing feature, the variables declared with var will have undefined value in the creation phase so the outer variable currentCity will get same undefined value. But after few lines of code JavaScript engine found a new function call(changeCurrentCity()) to update the current city with var re-declaration. Since each function call will create a new execution context, the same variable will have undefined value before the declaration and new value(Singapore) after the declaration. Hence, the value undefined print first followed by new value Singapore in the execution phase.

JavaScript Coding Exercise 68 | JSCodingQuestions.com

javascript

1var currentCity = "NewYork";
2
3var changeCurrentCity = function () {
4
5console.log("Current City:", currentCity);
6
7var currentCity = "Singapore";
8
9console.log("Current City:", currentCity);
10};
11
12changeCurrentCity();

Choose the correct output:

NewYork, Singapore

NewYork, NewYork

undefined, Singapore

Singapore, Singapore