Free Printable Javascript Arrays

Worksheets

Javascript Arrays

Total questions: 12

Worksheet time: 7mins

Name

Class

Date

An array is;

A shape

A size

A series of numbers

A list of information

What is first index value of an array?

-1

undefine

In Javascript, what surrounds an array?

Quotations

Curly Brackets

Parenthesis

Square Brackets

array = [1,2,3,4,5]
What is the length of this array?

125.4

Which definition below best describe an array?

An array is a function identifier that can hold more than one parameter.

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 function, which can hold more than one value at a time.

What is proper syntax for declaring a array in JavaScript?

var arrayName =[ ];

var arrayName[ ] ={ };

array arrayName ={ };

obj var arrayName =[ ];

Which of the variables below is an array?

var names="array"

var names = array;

var names = [];

var names[];

How would you change the first element in an array?

nums[1] = "New!";

nums = "New!";

var nums[1] = "New!";

nums[0] = "New!";

array = [1,2,3,4,5];
What is the highest position in this array?
HINT: Remember arrays start at position 0!

125.7

10.

What property tells you how many items are in an array?

length

count

items

num

11.

How would you access the second element in an array?

nums.2

nums[2]

nums_1

nums[1]

12.

Which of these lines of code show how to validly store an array with 3 items?

var nums = [42, 3, 7];

var nums = 3, 42, 7;

var nums = [3];

var nums = (3, 42, 7);

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Javascript Arrays

Total questions: 12

Worksheet time: 7mins

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