This document covers JavaScript array basics and loops. It discusses array data types, accessing array values using indices, determining array length, using for and while loops to iterate through arrays, and deleting array items. Control flow concepts like if/else if/else statements and logical operators are also mentioned. Exercises are included to practice creating and iterating through arrays using loops.

1. 1. Refresher
2. Array Basics
3. Loops
4. Control Flow

2. Data types

3. Data types
Number!
42

4. Data types
Number!
42
Float!
867.5309

5. Data types
Number!
42
Float!
867.5309
String!
“Hey, Jude”

6. Data types
Number!
42
Float!
867.5309
String!
“Hey, Jude”
Boolean!
true

7. Variables

9. Functions

11. 1. Refresher
2. Array Basics
3. Loops
4. Control Flow

12. What is an Array and
why do I care?

15. An array can be stored
as a variable

17. How do I access just
one value?

18. Array indices

29. How do I tell how many
items are in there?

32. Exercise
Create an Array with any values and assign it to
a variable.!
RTFG (read the freaking google) and find out
how to delete an item from a JavaScript array.

33. 1. Refresher
2. Array Basics
3. Loops
4. Control Flow

34. “for” loops

40. Remember this array?

42. How can we “iterate”
through this Array and print
out all of the values?

45. Exercise
Use the knowledge you have learned today to:!
create an Array of items and assign it to a
variable!
“iterate” through each item and delete it from
the array!
check the value of your variable you created
for the Array. What does it return?

46. “while” loops

48. Remember this for
loop?

50. Now, as a while loop…

52. “for” and “while” loops are two
different ways of accomplishing
the exact same thing.

53. Exercise
Convert your “for” loop from the previous exercise to a
“while” loop and make sure it has the exact same output
as before.!
If you forgot…!
create an Array of items and assign it to a variable!
“iterate” through each item and delete it from the array!
check the value of your variable you created for the
Array. What does it return?

54. 1. Refresher
2. Array Basics
3. Loops
4. Control Flow

55. No slides allowed here.
Learn to RTFG.

56. if!
else if!
else!
“switch” statement!
logical operators