What will be the output of the following code? var sayHi = function() { return "Hi"; }; console.log(sayHi());

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

A). performAction(function() { alert('Action!'); });

B). performAction(function { alert('Action!'); });

C). performAction(function() alert('Action!'););

D). performAction(function() alert('Action!'))

How can you define a method inside an object?

A). var obj = { method: function() { alert('Hello'); } };

B). var obj = { method() { alert('Hello'); } };

C). Both A and B

D). var obj = { function method() { alert('Hello'); } };

How do you define a function using a function expression?

A). var myFunc = function() { alert('Hello'); };

B). function myFunc() { alert('Hello'); }

C). var myFunc = function { alert('Hello'); };

D). var myFunc() { alert('Hello'); }

What is the term for a function that is passed as an argument to another function?

A). Callback function

B). Nested function

C). Helper function

D). Inner function

What will be the output of the following code? var double = function(x) { return x * 2; }; console.log(double(5));

A). 10

B). 5

C). undefined

D). double

How do you assign a function to a variable in JavaScript?

A). var greet = function() { alert('Hello'); };

B). var greet = function { alert('Hello'); };

C). function greet() { alert('Hello'); }

D). var greet = function alert('Hello');

What will be the output of the following code? var counter = (function() { var count = 0; return function() { return ++count; }; })(); console.log(counter()); console.log(counter());

A). 1, 2

B). 0, 1

C). undefined, undefined

D). 2, 4

Which of the following is an example of an arrow function assigned to a variable?

A). var add = (a, b) => { return a + b; };

B). var add = (a, b) => return a + b;

C). var add = (a, b) => { a + b };

D). var add = (a, b) { return a + b; };

What will be the output of the following code? var multiply = (x, y) => x * y; console.log(multiply(3, 4));

A). 12

B). 34

C). multiply

D). undefined

What is the output of the following code? function makeAdder(a) { return function(b) { return a + b; }; } var add5 = makeAdder(5); console.log(add5(2));

A). 7

B). 5

C). add5

D). makeAdder