Sure! Here's a basic implementation of a Legend of Zelda game where you play as Link and venture through a demo. Please note that this is a simplified version and may not include all features of the actual game.
In this simple game, you can control Link (represented by a rectangle) using the arrow keys on your smartphone. Link moves around on the canvas, and the canvas gets redrawn each time Link's position changes, creating the illusion of smooth movement. This is just a demo and doesn't include enemies, items, or other features typically found in the Legend of Zelda game, but it should give you a basic idea of how you can implement a game using JavaScript and HTML.