Blackjack is a popular card game that has been around for over 300 years. It is easy to learn and provides hours of entertainment. If you are looking to create your own version of Blackjack in Javascript, then you have come to the right place.

In this tutorial, we will cover the basics of how to make Blackjack in Javascript. We will start by discussing the rules of the game and then move on to creating the game interface, dealing cards, calculating scores, and determining the winner.

## The Rules of Blackjack

Before we begin coding our game, let’s first discuss the rules of Blackjack. In this game, each player is dealt two cards. The goal of the game is to have a hand value that is closer to 21 than the dealer’s hand value without going over 21.

Each card has a point value. Number cards are worth their face value (2-10), face cards (Jack, Queen, King) are worth 10 points each, and Aces are worth either 1 or 11 points depending on which value would be more beneficial for the player’s hand.

After receiving their initial two cards, players can choose to “hit” and receive additional cards one at a time until they decide to “stand” or until their hand exceeds 21 points resulting in an automatic loss (“bust”). Once all players have completed their turns, the dealer reveals their hand and draws additional cards if necessary until they reach at least 17 points or busts themselves.

If any player beats the dealer’s score without going over 21 or if the dealer busts while any player still has cards remaining in their hand, that player wins.

## Creating Our Game Interface

Now that we understand how Blackjack is played let’s start coding our game interface. We will use HTML and CSS for this task.

Firstly we create a basic HTML structure with appropriate tags like “, “, `

`, `

` etc. Then we create a container div with id “game” which will hold all of our game elements.

“`html

Blackjack Game

“`

Then we add some CSS styling to make the game look good and responsive.

“`css
body {
background-color: #0077be;
color: #fff;
font-family: Arial, sans-serif;
}

h1 {
text-align: center;
}

#game {
width: 80%;
margin: auto;
background-color: #fff;
padding: 20px;
}
“`

## Dealing Cards

Now that we have our game interface set up, let’s start coding the logic for dealing cards to the player and dealer. We will create an array of card values and another array of suits. Then we will create a function called `dealCard` that randomly selects a value and suit from these arrays and returns a new card object.

“`js
const values = [‘2’, ‘3’, ‘4’, ‘5’, ‘6’, ‘7’, ‘8’, ‘9’, ’10’, ‘J’, ‘Q’, ‘K’, ‘A’];
const suits = [‘hearts’, ‘diamonds’, ‘clubs’, ‘spades’];

function dealCard() {
const valueIndex = Math.floor(Math.random() * values.length);
const suitIndex = Math.random() * suits.length);

return {
value: values[valueIndex],
suit: suits[suitIndex],
};
}
“`

Next, we will create a function called `dealInitialCards` that deals two cards to the player and two cards to the dealer. We will also create an array called `playerCards` and `dealerCards` to hold the player’s and dealer’s cards.

“`js
const playerCards = [];
const dealerCards = [];

function dealInitialCards() {
playerCards.push(dealCard());
dealerCards.push(dealCard());
playerCards.push(dealCard());
}
“`

## Calculating Scores

Now that we have dealt the initial cards, let’s create a function to calculate the score for each hand. We will write a function called `calculateScore` that takes an array of cards as input and returns the total score for that hand.

“`js
function calculateScore(cards) {
let score = 0;
let hasAce = false;

for (let i = 0; i 21) {
score -= 10;
}

return score;
}
“`

## Player Actions

Now that we have dealt the initial cards and calculated the scores, let’s add some logic for player actions. We will create a function called `hit` that adds another card to the player’s hand.

“`js
function hit() {
playerCards.push(dealCard());
renderGame();
}
“`

We will also create a function called `stand` that ends the player’s turn and triggers the dealer’s turn.

“`js
function stand() {
dealerTurn();
}
“`

## Dealer Actions

Now that we have added player actions, let’s create a function to handle the dealer’s turn. We will write a function called `dealerTurn` that draws cards for the dealer until their score is at least 17.

“`js
function dealerTurn() {
while (calculateScore(dealerCards) 21) {
return ‘Dealer wins! ‘;
} else if (dealerScore > 21) {
return ‘Player wins! ‘;
} else if (playerScore === dealerScore) {
return ‘Tie!

‘;
} else if (playerScore > dealerScore) {
return ‘Player wins! ‘;
} else {
return ‘Dealer wins! ‘;
}
}
“`

## Rendering the Game

Now that we have written all of our game logic, it is time to render it to our HTML page. We will write a function called `renderGame` that updates our game interface with the current state of the game.

“`js
function renderGame() {
const gameElement = document.getElementById(‘game’);

gameElement.innerHTML = ”;

const playerHandElement = document.createElement(‘div’);
playerHandElement.classList.add(‘hand’);

for (let i = 0; i < playerCards.length; i++) {
const cardElement = document.createElement('div');
cardElement.add('card');

const valueElement = document.createElement('div');
valueElement.add('value');
valueElement.innerText = playerCards[i].value;

const suitElement = document.createElement('div');
suitElement.add('suit', playerCards[i].suit);
suitElement.innerHTML = ' ';

cardElement.appendChild(valueElement);
cardElement.appendChild(suitElement);
playerHandElement.appendChild(cardElement);
}

const dealerHandElement = document.createElement('div');
dealerHandElement.add('hand');

for (let i = 0; i < dealerCards.add('card');

if (i === 0) {
cardElement.add('facedown');
continue;
}

const valueElement = document.innerText = dealerCards[i].add('suit', dealerCards[i].innerHTML = ' ';

cardElem.appendChild(valueElem);
cardElem.appendChild(suitElem);
dealerHandElem.appendChild(cardElem);
}

gameElem.appendChild(playerHandElem);
gameElem.appendChild(dealerHandElem);

if (!gameEnded) {
const statusMessage = document.createElement("p");
if (dealerTurnComplete) {
statusMessage.innerText += `Player score: ${calculateScore(playerCards)}\n`;
statusMessage.innerText += `Dealer score: ${calculateScore(dealerCards)}\n`;
statusMessage.innerText += determineWinner();
gameEnded = true;
} else {
statusMessage.innerText += "Hit or stand?";
}
gameElem.appendChild(statusMessage);
}
}
“`

## Conclusion

In this tutorial, we have covered how to make a simple version of Blackjack in Javascript. We started by discussing the rules of the game and then moved on to creating the game interface, dealing cards, calculating scores, determining the winner, and rendering the game.

This is just a basic version of Blackjack, and there are many ways to improve upon it. You could add more player options like splitting or