JS Loops and Functions

What is a function in JavaScript?

• A function in JavaScript is a type of variable.

• A function in JavaScript is a method for creating objects.

• A function in JavaScript is a data structure that holds values.

• A function in JavaScript is a reusable block of code that performs a specific task.

How do you call a function in JavaScript?

• function call()

• call functionName

• invoke functionName()

• functionName()

A loop that executes for a pre-defined number of times

(a)  

A loop that executes until a condition is met is called

(a)  

for ( var i = 0; i < 50; i++ )

How many times will this loop execute

• 51 times

• 49 times

• 50 times

• 0 times

Which of the iterations runs 25 times

• for ( var i = 2; i < 26; i ++ )

• for ( var i = 0; i < 25; i ++ )

• for ( var i = -1 ; i > 25 ; i -- )

• for ( var i = 0; i <= 25; i --)

Given the following code, what is the final value of x?

var x = 0;

function myXFunction() {

x = x + 10;

}

x = x + 1;

• 11

• 0

• 10

• 1

What code will result in the above?

• alert("Please enter your phone number:")

• confirm("Please enter your phone number:")

• prompt("Please enter your phone number:")

What is the syntax for creating a function in JavaScript named as Geekfunc?

• A) function = Geekfunc()

• B) function Geekfunc()

• C) function := Geekfunc()

• D) function : Geekfunc()

What is the name of this function?

• function

• spin()

• 3 turnLeft();

• spin();