What is the output of function sayHi() { return 'Hi'; } alert(sayHi());?

What is the result of invoking a function without parentheses, like myFunction?

A). The function gets executed

B). The function returns undefined

C). The function is referenced but not executed

D). The function throws an error

What does return without a value return?

A). 0

B). null

C). undefined

D). NaN

What is the main purpose of the () operator in JavaScript functions?

A). To define a function

B). To invoke a function

C). To declare a variable

D). To create an object

Which of the following is an example of an Immediately Invoked Function Expression (IIFE)?

A). function() {}();

B). (function() {})();

C). function() {}

D). (function {})();

How do you invoke a method named greet on an object person?

A). person.greet;

B). person.greet();

C). greet(person);

D). persongreet;

How can you invoke a function stored in a variable myFunc?

A). myFunc();

B). call myFunc;

C). myFunc[];

D). invoke(myFunc);

What is the output of var test = function() { return 5; }; console.log(test());?

A). test

B). 5

C). undefined

D). function

What will function greet() { console.log('Hi'); } var x = greet; x(); output?

A). Hi

B). undefined

C). x

D). greet

What is the output of function test() { return 2 + 2; } console.log(test());?

A). 22

B). 2 + 2

C). 4

D). test

What is the output of function multiply(x, y) { return x * y; } var result = multiply(5, 10); console.log(result);?

A). 50

B). 510

C). undefined

D). multiply