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

How do you invoke a function named myFunction?

A). myFunction;

B). call myFunction();

C). myFunction();

D). myFunction[];

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

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

A). Hi

B). undefined

C). x

D). greet

What is the output of function test() { return 2 + 2; } console.log(test());?

A). 22

B). 2 + 2

C). 4

D). test

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

What is the output of function sayHi() { return 'Hi'; } alert(sayHi());?

A). sayHi

B). Hi

C). undefined

D). alert

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

What is the output of function multiply(x, y) { return x * y; } var result = multiply(5, 10); console.log(result);?

A). 50

B). 510

C). undefined

D). multiply

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

A). person.greet;

B). person.greet();

C). greet(person);

D). persongreet;