1. JavaScript Arrays Date

2. Arrays

3. Producing different results
We have looked at how to compute different numeric values
Computation
Random
How do we create different strings?
Can do it from user input
But want to translate a number to a string
Examples:
Random facts
Convert month or day number to string

4. Arrays Collection of related information
Referenced with index
Easy way to choose between items
var array = [ “A", "B", “F", "G" ];
Just keep adding items!
array[index]
Start with 0
Example:
Date returns number, you return that month

5. Create your first array
Change a number to text
Create a JavaScript function called spellIt
Takes in a number from 0 to 9
Returns a string with the number name
Call it with a button press, passing the user input

6. Date

7. Date() Returns a collection of information
Year, month, day, hours, minutes, seconds, milliseconds

8. Date and Time Full date is unfriendly format
To get today’s date: var d = new Date();
To get the time: var time = d.getHours();
To get the day: var theDay = d.getDay();
w3schools

9. What does day return? Number 0 to 6
Want to convert to Sunday, Monday, …
var DayOfWeek =
[“Sun”, “Mon”, “Tues”, “Wed”, “Thurs”, “Fri”, “Sat”];

10. Display the current month
Create a JavaScript function called monthName
To be in the same file as spellIt
No parameters needed
Returns a string with this month’s name

11. Extend spellIt Accept a number 20-29 and spell it out Subtract 20
twenty, twenty-one, twenty-two, …, twenty-nine
Subtract 20
Will need to change the array to include -
What should the 0 array value be?

12. HTML Page It should print the date of your last major assignment
User enters a number between 20 and 29
Button press returns the month and date spelled out
Example:
Enter 27
Returns April twenty-seven