Arrays Javascript (CodeCademy)

What surrounds an array?

• Quotations
• Curly Brackets
• Parenthesis
• Square Brackets

array = [2,0,3,5,4] What is the length of this array?

• 5

• 4

• 0

• 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?

• const arrayName =[ ];

• let arrayName[ ] ={ };

• array arrayName ={ };

• obj var arrayName =[ ];

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!

• 4
• 5
• 0
• 125.7

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

• length
• count
• items
• num

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 adds a new element to the end of an array

• true

• false

When we can change the contents of an array, but cannot reassign the variable name to a new array or other data type.

• Muteable

• Arrow Function

• Global Scope