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

What is the output of function sum(a, b) { return a + b; } console.log(sum(3, 4));?

A). 34

B). 7

C). undefined

D). sum

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

A). function() {}();

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

C). function() {}

D). (function {})();

Which of the following correctly invokes a function with parameters?

A). function myFunc(a, b) { }; myFunc(a b);

B). function myFunc(a, b) { }; myFunc(a, b);

C). function myFunc(a b) { }; myFunc(a, b);

D). function myFunc(a, b) { }; myFunc[];

What happens if a function is invoked without parentheses in an event handler like onclick='myFunction'?

A). The function is executed immediately

B). The function reference is assigned

C). An error is thrown

D). The function does not work

How can you invoke a function named init only once when the script runs?

A). init;

B). (init)();

C). init();

D). function init() {}();

How do you invoke a function named myFunction?

A). myFunction;

B). call myFunction();

C). myFunction();

D). myFunction[];

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

A). Hi

B). undefined

C). x

D). greet

What does return do inside a function?

A). Stops the function

B). Returns a value to the caller

C). Both A and B

D). Declares a variable

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

How do you define and invoke a function to calculate the square of a number in one step?

A). var square = function(n) { return n * n; }; square(5);

B). (function(n) { return n * n; })(5);

C). function square(n) { return n * n; } square(5);

D). var square = (n) { return n * n; }; square(5);