How do you define a function with parameters in JavaScript?

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) }

What is the correct syntax for invoking a function named myFunction?

A). call myFunction()

B). myFunction()

C). myFunction(call)

D). invoke myFunction()

How do you handle the returned value of a function that returns an object?

A). var obj = myFunction(); obj.key;

B). var obj = myFunction().key;

C). var obj = myFunction.key();

D). var obj.key = myFunction();

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

A). test

B). Hello

C). undefined

D). error

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) { }

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 happens if a function does not have a return statement?

A). It returns undefined

B). It throws an error

C). It returns null

D). It returns 0

What is the correct way to return an object from a function?

A). return object { };

B). return { };

C). return new Object { };

D). return object() { };

What is an anonymous function?

A). A function without a name

B). A function without parameters

C). A function without return value

D). A function without a body

How can you pass a function as an argument to another function?

A). function anotherFunction(function) { }

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

C). anotherFunction(myFunction);

D). function anotherFunction(myFunction()) { }