What is the purpose of the return statement in 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

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

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

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 define a function that takes parameters?

A). function myFunction[] { }

B). function myFunction(parameters) { }

C). function myFunction{parameters}

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

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

A). function => { }

B). () => { }

C). arrow function() { }

D). => function() { }

How can you return a value from a function?

A). return value;

B). give value;

C). send value;

D). output value;

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 difference between function declarations and function expressions?

A). Function declarations are hoisted, function expressions are not

B). Function expressions are hoisted, function declarations are not

C). Function declarations cannot take parameters

D). Function expressions cannot return values

How can you assign a function to a variable?

A). var myFunc = function() { };

B). var myFunc = function { };

C). var myFunc function() { };

D). var function myFunc() { };