HTML5 Game from scratch step by step learning JavaScript

Learn to build a complete HTML5 canvas game from scratch using JavaScript, including setup, images, keyboard input, collision detection, animation, and rendering, with source files and CodePen resources.

Declare the HTML5 document type, set up head and body, and create a canvas with width 600 and height 400 to start the HTML5 game template.

Connect an HTML5 canvas to JavaScript using getElementById and getContext, draw on a 2d context, and ensure the script runs after the DOM loads.

Learn to create a canvas with JavaScript, set its size, append it to the document body, and ensure it loads for dynamic HTML5 game elements.

Load an image into a canvas and set up a Pac-Man style game with dots and ghosts, including blue ghost mode, using a render loop to start the game.

Learn to render a fragment of a loaded sprite sheet onto a canvas using drawImage, specifying source x,y,width,height and destination x,y,width,height, with Pac-Man and ghost examples.

Set up keydown and keyup listeners, track key codes, and move the player while rendering the updated position in an html5 game.

Learn to add an enemy in an HTML5 canvas game using requestAnimationFrame to loop rendering, draw a ghost, and manage layer order with Pac-Man.

Implement a random ghost system for an HTML5 game using Math.random and floor to pick a color and a position, and render it only when it doesn’t already exist.

Learn to implement a moving enemy in an HTML5 game with random direction changes, variable speed, and player-aware decisions, including screen wrap for continuous motion.

Adjust calculations to keep the enemy from running off the page, tweak speed and direction, and explore collision detection and power dot integration for Pac-Man to eat dots and ghosts.

Add a power up dot to a canvas game by placing it at random x and y coordinates, toggling visibility, and drawing a yellow arc for Pac-Man style gameplay.

Power up the ghost with flashing eyes and image toggling driven by a countdown, while implementing collision detection and dot-eating logic that resets color and triggers escape.

Learn how to make the ghost reverse direction after a power dot is eaten by inverting its speed. Set up collision detection for power dot events.

Refine ghost collision detection, implement score updates for player and ghost, and reset positions after collisions in this HTML5 game. Adjust hit areas and enable ghost movement for smoother gameplay.

Slow eye blinking and preserve white and blue flashes when pursuing, using a countdown to control blink timing. Increase speed after power-ups and fix power-dot placement.