Javascript Arrays

Front

An array is;

Back

Lists of data

Front

What is first index value of an array?

Back

0

Front

What surrounds an array?

Back

Square Brackets

Front

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

Back

5

Front

Which definition below best describe an array? Options: 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.

Back

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

Front

What is proper syntax for declaring a array in JavaScript? Options: var arrayName =[ ];, var arrayName[ ] ={ };, array arrayName ={ };, obj var arrayName =[ ];

Back

var arrayName =[ ];

Front

Which of the variables below is an array? var names="array", var names = array;, var names = [];, var names[];

Back

var names = [];

Front

What will be the output to the console for the following code:
var colors = ["Red", "Green", "Yellow", "Orange", "Blue"];
colors.splice(0,3, "Purple");
console.log(colors);

Back

The output will be: ["Purple", "Orange", "Blue"]

Front

How would you change the first element in an array? Options: nums[1] = "New!";, nums = "New!";, var nums[1] = "New!";, nums[0] = "New!";

Back

nums[0] = "New!";

Front

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

Back

4