How can you return a value from a function?

Which statement correctly defines a function named sum that returns the sum of two parameters a and b?

A). function sum(a, b) { return a + b; }

B). function sum(a, b) { a + b; }

C). function sum(a, b) return a + b;

D). function sum(a, b) { return (a + b) }

How do you define a default parameter in a function?

A). function myFunction(param = 10) { }

B). function myFunction(param == 10) { }

C). function myFunction(param := 10) { }

D). function myFunction(param : 10) { }

Which of the following is true about functions in JavaScript?

A). Functions cannot be nested

B). Functions can only have one parameter

C). Functions can be assigned to variables

D). Functions cannot return values

Which of the following is an example of an arrow function?

A). function => { }

B). () => { }

C). arrow function() { }

D). => function() { }

How do you call a function named myFunction?

A). call myFunction()

B). myFunction()

C). call function myFunction()

D). myFunction(call)

How do you define an Immediately Invoked Function Expression (IIFE)?

A). function() { }();

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

C). function() { }();

D). function() ( ) { }

How do you call a method named greet that belongs to an object person?

A). person(greet);

B). person.greet();

C). greet.person();

D). call person.greet();

What is a method in JavaScript?

A). A function stored as a property of an object

B). A variable declared within a function

C). A keyword used to define a function

D). A loop within a function

What will be the output of the following code: function test() { return 'Hello'; } alert(test());?

A). undefined

B). test

C). Hello

D). error

What is the scope of a variable declared inside a function?

A). Global

B). Local to the function

C). Local to the script

D). It depends on the variable type