JavaScript Variables and Arithmetic

Which of these is NOT a JavaScript operator?

• +

• *

• ++

• *=

• =+

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

• ; (semicolon)

• = (equals)

• " (quote)

• , (comma)

Which of these is a JavaScript keyword?

• var

• variable

• equal

• add

var a = 2;

Which of these will cause a to be 3 times larger?

• a += 3;

• a += 4;

• a += 1

• a++;

Which of these will cause a syntax error?

• var strA = "She says, "Hi There" ";

• var a = 4.98 - 15;

• var b = b;

• var strB = "\"quoted\""

What is the result of this code?

var a = 15 % 3;

• a = 0

• a = 5

• a = 12

• a = 45

Which of the following is NOT a valid starting character for JS variable names?

• A (uppercase letter)

• a (lowercase letter)

• $ (dollar sign)

• _ (underscore)

• 3 (digit)

Which of the following is a symbol that must NOT be present in any JS variable name?

• A

• z

• _

• %

Which of the following operator is used for the Assignment Operator?

• ==

• !

• =

• +

What is the symbol used for the INCREMENT operator in JS?

• +

• ++

• =

• ==