Javascript Demos
Pixel art applet
Interactive Color Grid
Compound Interest Over Time - HTML table
Time Applet
Gamepad Demo
Infinitive Verb Conjugator - Spanish
Age in Days
Adding Numbers
Temperature Range
Running Speed Rate
LocalStorage Demo
Lottery Number Simulator
Days Left Till
Timer
Stopwatch
Click Speed Test
Utilities
Reversing the String
Factoring Calculator
Visual Reaction Time Test
Random Color Generator

Programming Demonstrations

| JS code can be viewed here

cycle

fast cycle

cascade

clear

Compound Interest Over Time - HTML table

Generates a table with periodic interest and accrued interest over time

initial principal (units of currency)

number of times interest is compounded per year

number of years

percent annual interest rate

Time Applet

current.date

current.time

time left until the end of the day...

hours.time

minutes.time

seconds.time

time that has passed since the beginning of the day...

hours.time

minutes.time

seconds.time

Gamepad Demo

plugin a gamepad controller (e.g. Playstation / XBox / Arcade Stick controller) to test user input from the game controller;

gamepad status, details, and input should display when the controller is plugged in and buttons are pressed

a demonstration video is available here: (https://fbacarisas.xyz/video/index.html#gamepad_demo)

Gamepad status: OFF

Button Input:

Input Sequence

infinitive verb conjugator - Spanish

Input a regular infinitive verb to get its conjugated forms (e.g. vivir, aprender, mejorar).

You can also use the "Get Verb Example" button to generate an example infinitive verb as well.

	yo	tu	el/ella	nosotros	ellos
Present:
Preterit:
Future:

Age in Days

Find out the age in days by completing the fields below with a birthdate and then clicking on "calculate days."

How it works: the difference in the number of days is calculated between the input values and the current date. The year, month, and day fields accept numeric inputs.

year:
month:
day:

+ =

correct: 0

incorrect: 0

Temperature Range

Mode:

celsius farenheit

°C

°F

Running Speed Rate

kilometer mile

minutes seconds

distance (km)

LocalStorage Demo

Use localStorage to save data to a Storage object across browser sessions (like reloading the page or reopening the browser).

key: value:

Lottery Number Simulator

Winning Numbers:

Days Left Till

Find out how many days are left until the date listed in the table below. The cells indicate how many days until this year's date and next year's date (negative values indicate how many days passed since). Dates mostly reference United States federal holidays with a few others.

1-1

2-14

4-1

7-4

10-31

11-11

11-26

12-25

Timer

Timer with several features including start/stop/restart

: :

JS code can be viewed here

Stopwatch

Stopwatch with several features including recording time points and start/pause/restart

0 : 0 : 0 : 0

JS code can be viewed here

click Speed Test

try to click the button as fast as possible for 30 seconds.

clickcounter:

timer

five seconds:

ten seconds:

twenty seconds:

thirty seconds:

average clicks per second:

Utilities

Sample Calculator

Add Numbers

Multiply Numbers

Subtract Numbers

Divide Numbers

FizzBizz:

Here's a basic test for the fizzbizz challenge:

Cond. 1: consider an array of ints from 1 to 100

Cond. 2: int % 15 == 0 -> print "fizzbizz"

Cond. 3: int % 5 == 0 -> print "bizz"

Cond. 4: int % 3 == 0 -> print "fizz"

Cond. 5: anything else -> print the int

Reversing the String

Type in a String:

Factoring Calculator

Enter Number to Factor:

Visual Reaction Time Test

Instructions:

This program records visual reaction time when the user responds to the screen turning green.

Press the start button to begin the timer;
when the screen turns green, click the button again to record reaction time.