Unit #3 JavaScript

What is proper syntax for declaring a array in JavaScript?

• var arrayName =[ ];

• var arrayName[ ] ={ };

• array arrayName ={ };

• obj var arrayName =[ ];

Which definition below best describe an array?

• An array is a function identifier that can hold only one element.

• An array is a beam of light.

• An array is a special variable, which can hold more than one value at a time.

• An array is a special program, which can hold more than one value at a time.

What is first index value of an array in JavaScript?

• -1

• 0

• 1

• undefine

The length() method for an array will return _____.

• the number of elements in the array

• the last index value of the array.

• the length of the name of the array variable

• the capacity of the array

The push() method append to the _______ of the array.

• beginning

• middle

• end

• none of the above

The pop() method removes the _______ element of the array.

• beginning

• middle

• end

• none of the above

A condition is __________.

• any expression that evaluates to True or False

• a formula that is executed for a result

• an operand that indicates both conditions are True or False

• a built-in function that assigns a Boolean value to a variable

What JavaScript code matches this statement:

Their name is Jacob and they are less than 15 years old.

• if(name = "Jacob" && age < 15)

• if(name == "Jacob" || age < 15)

• if(name == "Jacob" && age < 15)

• if("name" == "Jacob" && age < 15)

What symbol represents the and operator in JavaScript?

• AND

• &

• and

• &&

Conditions return values of which data type?

• Integers

• Booleans

• Strings

• Index Value