javascript-methods

Question 1

Why do we log things to the console?

Answer 1

To show what the code is doing.

Question 2

What is a method?

Answer 2

A method is a function which is a property of an object.

Question 3

How is a method different from any other function?

Answer 3

The difference is that a method is associated with an object, while a function is not.

Question 4

How do you remove the last element from an array?

Answer 4

pop method of the Array object

Question 5

How do you round a number down to the nearest integer?

Answer 5

floor method of the Math object

Question 6

How do you generate a random number?

Answer 6

random method of the Math object

Question 7

How do you delete an element from an array?

Answer 7

1. splice method of the Array object
2. pop method of the Array object
3. shift method of the Array object

Question 8

How do you append an element to an array?

Answer 8

push method of the Array object

Question 9

How do you break a string up into an array?

Answer 9

split method of the String object

Question 10

Do string methods change the original string? How would you check if you weren’t sure?

Answer 10

• No

- console.log

Question 11

Roughly how many string methods are there according to the MDN Web docs?

Answer 11

30

Question 12

Is the return value of a function or method useful in every situation?

Answer 12

No

Question 13

Roughly how many array methods are there according to the MDN Web docs?

Answer 13

30

Question 14

What three-letter acronym should you always include in your Google search about a JavaScript method or CSS property?

Answer 14

MDN