JavaScript

What other languages are typically used with JavaScript?

• Python

• Ruby

• HTML & CSS

• SQL

What are the different ways to include JavaScript in your application? Choose all that apply.

• <script> alert('Hello'); </script>

• <link src='myjavascript.js'></link>

• <link href="myjavascript.js></link>

• <script src="myjavascript.js"></script>

How would you declare a variable in JavaScript?

• var myName = "Sally"

• myName = "Sally"

• myName var = "Sally"

• var myName = Sally

What is the difference between var and let in JavaScript?

• There are no differences, they are both the same.

• let is visible through blocks and accessed globally, var isn't.

• var is visible through blocks and accessed globally, let isn't.

• let is used more frequently, var isn't.

When would you use the const declaration in JavaScript? Choose all that apply.

• When you're creating a variable.

• When a variable has a constant value that won't change.

• When creating a temporary variable.

What would alert(6 + '2') show?

• 8

• 62

• 6+'2'

• 6'2'

What would alert('6'-2) show:

• An error Message

• 62

• '6'-2

• 4

Look at the following code:

let attendees = 568;

attendees++

document.write(attendees)

What will print to the browser?

• 568

• 570

• 569

• An error message

Look at the following code:

let total_price = 40;

total_price--

--total_price

document.write(total_price)

What will print to the browser?

• 39

• 40

• 38

• 42

Read the code below:

alert(true || false);

What would the output be?

• True

• False