Samantha Yu

Gameplay

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Whenever the player presses the "HIT" button, a random card is drawn and the card total is updated. The player tries to get a card total that is closer than the computer to 21. If the player's card total is greater than 21, they lose money and the computer has automatically won that round. If the player has gone bankrupt or the game has reached the maximum number of rounds, then the game ends.

				function hit() {    // The player draws a random card and the card total is updated
					ranNum = Math.floor(Math.random()*10)+1
					document.blackJack.yourCard.value = ranNum
					yourCard = parseInt(document.blackJack.yourCard.value)
					yourTotal = parseInt(document.blackJack.yourTotal.value) + yourCard
					document.blackJack.yourTotal.value = yourTotal
					yourMoneyBet = document.blackJack.potMoney.value
						
					if (yourTotal > 21) {   // If the player's card total is greater than 21, the computer has won the round
						alert("Your total is over 21. You lose this round and $" + yourMoneyBet + ".")
						yourLoss = parseInt(document.blackJack.yourLoss.value) + 1
						document.blackJack.yourLoss.value = yourLoss

						compWin = parseInt(document.blackJack.compWin.value) + 1
						document.blackJack.compWin.value = compWin

						document.blackJack.yourCard.value = 0
						document.blackJack.yourTotal.value = 0
						yourTotal = 0
						numRounds = parseInt(document.blackJack.numRounds.value)
						document.blackJack.numRounds.value = numRounds + 1
						
						yourMoneyTotal = document.blackJack.yourMoneyTotal.value
						yourMoneyBet = document.blackJack.potMoney.value
						document.blackJack.yourMoneyTotal.value = yourMoneyTotal - yourMoneyBet

						checkMoney();
						checkNumRounds();
						
						if ((document.blackJack.yourMoneyTotal.value < document.blackJack.potMoney.value) && (document.blackJack.yourMoney[4].checked == true)) {   // If the player decided their own amount
							// After losing some money, the player might be betting more than they have
							chooseMoney();
						}
					}
					else if (yourTotal == 21) { // If the player's card total is 21, the player has automatically won the round
						alert("Your total is 21. You won this round and $" + yourMoneyBet + ".")
						yourWin = parseInt(document.blackJack.yourWin.value) + 1
						document.blackJack.yourWin.value = yourWin

						compLoss = parseInt(document.blackJack.compLoss.value) + 1
						document.blackJack.compLoss.value = compLoss

						document.blackJack.yourCard.value = 0
						document.blackJack.yourTotal.value = 0
						yourTotal = 0
						numRounds = parseInt(document.blackJack.numRounds.value)
						document.blackJack.numRounds.value = numRounds + 1
							
						yourMoneyTotal = parseInt(document.blackJack.yourMoneyTotal.value)
						yourMoneyBet = parseInt(document.blackJack.potMoney.value)
						document.blackJack.yourMoneyTotal.value = yourMoneyTotal + yourMoneyBet
							
						checkNumRounds();

						if (document.blackJack.yourMoney[3].checked == true) {  // If the player decided to go all in
							// After winning some money, the amount of money in the pot must be updated
							allYourMoney();
						}
					}
				}
				

When the player presses the "STAND" button, the player stops receiving random cards that round. The computer will continue to draw random cards until their total is greater than the player's or is 21. The player will win or lose their bet depending on who gets the closest card total to 21 without going over.

				function stand() {  // The player decides to end their turn 
					alert("Your total is " + yourTotal + ".")
					yourMoneyBet = document.blackJack.potMoney.value

					// The computer continues to draw random cards until either its card total is greater than 21 or the player's card total
					for (compTotal = 0; compTotal < 21; compTotal + compCard) {
						ranNum = Math.floor(Math.random()*10)+1
						document.blackJack.compCard.value = ranNum
						compCard = parseInt(document.blackJack.compCard.value)
						compTotal = compTotal + compCard
						document.blackJack.compTotal.value = compTotal
						alert("Computer's card is " + compCard+", and the computer's total is "+compTotal+".")
						
						// If the computer's greater card total than the player's but is still less than 21, the computer has won the round 
						if (compTotal > yourTotal && compTotal <= 21) {
							alert("The computer has automatically won this round since it has a total greater than yours and yet, is still under or equal to 21. \nYou have lost $" + yourMoneyBet + ".")
							document.blackJack.compCard.value = 0
							document.blackJack.compTotal.value = 0
							document.blackJack.yourTotal.value = 0
							document.blackJack.yourCard.value = 0

							yourLoss = parseInt(document.blackJack.yourLoss.value) + 1
							document.blackJack.yourLoss.value = yourLoss

							compWin = parseInt(document.blackJack.compWin.value) + 1
							document.blackJack.compWin.value = compWin
					
							numRounds = parseInt(document.blackJack.numRounds.value)
							document.blackJack.numRounds.value = numRounds + 1
								
							yourMoneyTotal = parseInt(document.blackJack.yourMoneyTotal.value)
							yourMoneyBet = parseInt(document.blackJack.potMoney.value)
							document.blackJack.yourMoneyTotal.value = yourMoneyTotal - yourMoneyBet
							
							checkMoney();
							checkNumRounds();
							
							if ((document.blackJack.yourMoneyTotal.value < document.blackJack.potMoney.value) && (document.blackJack.yourMoney[4].checked == true)) {   // If the player decided their own amount
								// After losing some money, the player might be betting more than they have
								chooseMoney();
							}           
							break
						}
					}
					// If the computer has a card total greater than 21, the player has won that round
					if (compTotal > 21) {
						alert("The computer's total is over 21. You won this round and $" + yourMoneyBet + ".")
						document.blackJack.compCard.value = 0
						document.blackJack.compTotal.value = 0
						document.blackJack.yourTotal.value = 0
						document.blackJack.yourCard.value = 0

						yourWin = parseInt(document.blackJack.yourWin.value) + 1
						document.blackJack.yourWin.value = yourWin

						compLoss = parseInt(document.blackJack.compLoss.value) + 1
						document.blackJack.compLoss.value = compLoss
							
						numRounds = parseInt(document.blackJack.numRounds.value)
						document.blackJack.numRounds.value = numRounds + 1
							
						yourMoneyTotal = parseInt(document.blackJack.yourMoneyTotal.value)
						yourMoneyBet = parseInt(document.blackJack.potMoney.value)
						document.blackJack.yourMoneyTotal.value = yourMoneyTotal + yourMoneyBet
							
						checkNumRounds();
						if (document.blackJack.yourMoney[3].checked == true) {  // If the player decided to go all in
							// After winning some money, the amount of money in the pot must be updated
							allYourMoney();
						}
					}
					
					// The cards and card totals are reset for the next round
					compCard = 0
					compTotal = 0
					yourCard = 0
					yourTotal = 0
				}
				

When the game ends, the player has the option to restart or to close the page. I decided to change closing the page to refreshing the page.

				function playAgain() {  // When the game ends because to the player has gone bankrupt
					// The player is given the option to restart
					var playAgain = confirm("The game is over, because you have gone bankrupt. Would you like to play again?")
						
					if (playAgain == true) {
						document.blackJack.yourMoneyTotal.value = 500
						document.blackJack.numRounds.value = 0
						document.blackJack.yourWin.value = 0
						document.blackJack.yourLoss.value = 0
						document.blackJack.compWin.value = 0
						document.blackJack.compLoss.value = 0
						document.blackJack.yourMoney[0].checked=true;
						document.blackJack.potMoney.value = document.blackJack.yourMoney[0].value
					}
					else {  // When I submitted this game for my Computers 11 class, the page would close if the player did not want to play another game
						// I decided to change this to refreshing the page when I incorporated it into this website
						location.reload(true);
					}
				}
				

About

Paint Program

Double Buffering

On Startup

Layers

Menu

Colors

Tools

Javadoc

PaintApp Class

Layers Class

Menu Class

Tools Class

Source Code

Blackjack

Gameplay

Money

Source Code