Javascript in Khan 1116

Which of the following is a valid variable name in JavaScript?

• myVariable

• 123Variable

• $variable

• var

How are strings represented in JavaScript?

• like this "Alice"

• Without quotes

• Using special characters

• Using numbers

• All of the above

What does initializing a variable mean?

• Naming it

• Assigning a value to it

• Creating a box for it

• Naming and assigning a value to it

• Deleting it

What is the correct way to assign a value to a variable in JavaScript?

• x = 5;

• 5 = x;

• x == 5;

• x := 5;

Which of the following is the correct way to declare and initialize a variable to store the number 10?

• int number = 10;

• number = 10;

• var number = 10;

• float number = 10;

• number 10;

What symbol is most likely to appear in a JavaScript program?

• ; (semicolon)

• = (equals)

• " (quote)

• , (comma)

Which type of variable is used to hold true or false values?

• String

• Integer

• Char

• Float

• Boolean

A variable is used to:

• Store a value in memory
• Draw a circle
• Store a value that does not change
• Draw a rectangle

Which of these lines of JS code are syntactically correct?

• rect(100, 100, 50, 50);

• rect(100 100 50 50);

• rect[100, 100, 50, 50];

• rect(100, 100, 50, 50):

Which line of code could be used to make this image.

• rectangle(20, 20, 150, 100);

• rect(20, 20, 20, 20)

• rect(20, 20, 150, 100);

• ellipse(20, 20, 150, 100);