2D Game Development With HTML5 Canvas, JS - Tic Tac Toe Game

Explore how to design a tic tac toe game with an algorithmic approach: outline steps, initialize states, and define winning conditions using a two-dimensional array in JavaScript and HTML5 canvas.

Uses canvas functions to draw X's and O's on nine canvases, tracks turns with a turn variable, checks eight winning conditions after each move, and handles draws when board fills.

Create the HTML5 code skeleton for the tic tac toe game, including doctype, html, head, body, and a title with live preview in editors like brackets.

Discover how to implement html5 meta tags, including charset utf-8 and viewport settings, to ensure proper encoding, search ranking signals, and responsive display for the tic tac toe game.

Create the header section with the header tag and an h1 heading assigned a unique id, then reserve an area with id result for JavaScript to display the game outcome.

Create the game area and rules sections by adding sections named game and rules, using header, section, and div blocks to structure the page and include a new game button.

Create nine HTML5 canvases of 100x100 pixels each to render a tic tac toe grid, assign unique IDs, arrange them in three rows, and add a centered new game button.

Create the rules section for the tic tac toe game by adding a heading and three paragraphs describing turns, consecutive moves, and starting anew.

Learn how to connect HTML and CSS in a tic tac toe game project by creating an external stylesheet, linking it in the head, and separating styling from markup.

Learn to style HTML elements using CSS selectors, apply a universal background color, and work with background-color and color attributes, including hex values and color pickers.

Use the universal selector to reset browser default margins and padding, then style the header by centering its text and adding top margin to create space from the game area.

Style tic tac toe headings using unique IDs and CSS selectors (#head, #reserved), set 50px cursive font in cornflower blue, then center the result heading in chocolate with 30px margins.

Style the canvases by applying a solid border and background color to all nine canvases, then adjust their alignment and position images on the current canvas for drawing.

Style the entire game area by organizing three containers—a section wrapper, a canvas group, and a rules area—using position relative and centered margins for a 640 by 320 layout.

Style the divs that hold the canvases and rules area by sizing the containers, centering them, and arranging them side by side using inline-block, float, and text-align properties.

Style the paragraphs and h2 headings in the rules section by setting font sizes, margins, and colors for a consistent look, preparing for the new game button and hover conditions.

Style the new game button demonstrates applying a 15px top margin, 20px bold font, lime background, and a 1px black border; hover effects and semicolon rules are covered.

Learn to implement hover effects on canvases and the new game button with CSS pseudo selectors and background color changes.

Learn how to connect HTML and JavaScript files by setting up a basic project structure, linking scripts and styles, and placing script tags for proper loading.

Explore how variables serve as containers of information in JavaScript, holding strings, numbers, and booleans; declare with var, follow naming rules and camelCase, and apply semicolon usage.

Explore core JavaScript operators—addition, subtraction, multiplication, division, modulo—and compound forms such as += and *=. Learn to display results with alert, variables, and string concatenation for the game.

Explore how conditional statements drive gameplay decisions in JavaScript, using if and switch structures, comparison operators, and comments to control code execution in a Tic Tac Toe game.

Explore how switch statements in JavaScript handle multiple conditions with case blocks, breaks, and an optional default, unlike the if statement. See the execution flow in a practical example.

Learn how for loops in JavaScript execute a block of statements repeatedly, driven by initialization, condition, and increment, illustrated by printing 1 to 5 with document.write.

Learn how arrays extend variables to hold multiple values, declare and access 1-dimensional arrays using zero-based indices, and modify elements, including strings and booleans.

Explore two-dimensional arrays in JavaScript by creating a parent array of child arrays, populating nested values, and accessing elements with two indices for precise data retrieval in a two-dimensional grid.

Explore JavaScript functions, a block of code you can define and call—two parts—to perform operations, return values, and save lines of code.

Learn to work with the document object model, locate elements by id, modify text and attributes with getElementById and innerText, and set up click events for interactive pages.

master DOM click events by using on click attributes and addEventListener, target elements by id, and define button click handlers, highlighting best-practices for clean markup and tic tac toe setup.

Learn how to use the mouse down event with addEventListener, retrieve the target element by id, and change its background color using camelCase style properties in JavaScript.

Create and handle mouse down, mouse up, and mouse move events on a canvas element, updating the background color from red to yellow to green with simple event listeners.

Explore how JavaScript uses objects to model real-world entities by defining properties and values. Learn the basic syntax to declare objects and access their properties in code.

Create and identify canvases on web pages, acquire a 2d drawing context with getContext, and build a drawing object to render shapes for your tic tac toe game.

Learn to draw lines on an HTML5 canvas by mastering the coordinate system (0,0 origin, x right, y down) and using moveTo, lineTo, stroke, and strokeStyle.

Learn to draw multiple shapes on a canvas by using beginPath and closePath, moveTo and lineTo, and fill or stroke with color to create outlined or filled shapes.

Learn to draw circles and arcs on the canvas using the arc function, specifying center coordinates, radius, start and end angles in radians, and applying fill styles and colors.

Create and link a JavaScript file to the HTML page for the tic tac toe game. Initialize variables and arrays for the nine boxes inside a window.onload anonymous function.

Declare and initialize the nine canvases, their drawing context, and the game state to track moves, symbols, and a game-over flag for tic tac toe.

Initialize one- and two-dimensional arrays for a tic tac toe game, setting nine canvases to false and symbols to blank, with zero-based indices for win conditions.

Create a new game button handler by getting the element by id, wiring an addEventListener click to call the newGame function, and reload the page.

Attach a single click listener to the canvas container, reference the event object's target id, and call the box click function with the clicked canvas id.

Create a canvas click handler that retrieves the clicked canvas id, maps it to a box index, obtains the canvas context, and uses a switch to update the game state.

Implement drawing logic for tic tac toe on an HTML5 canvas by checking box states, game over status, and turn parity to render X or O shapes.

Draws X and O on a 100 by 100 canvas with beginPath, moveTo, lineTo, and arc, using a dodger blue stroke, and updates the symbol array and turn.

Test intermediate output by debugging the canvas symbols, using dev tools to spot errors and refresh the page, confirming the first symbol draws before prepping for winner checks.

Check the tic tac toe winner by comparing the current symbol against eight winning patterns with a for loop, using a winner array to declare a win or draw.

Detect a win and display the winner by updating the result header with the winning player's symbol using innerText. Then set the game over state to prevent further moves.

Learn to implement draw and game over conditions, show alerts for invalid moves, and manage new game resets in a HTML5 canvas tic tac toe project.