| 1 | <!DOCTYPE html> |
| 2 | <html lang="es"> |
| 3 | |
| 4 | <head> |
| 5 | <meta charset="UTF-8"> |
| 6 | <meta name="viewport" |
| 7 | content="width=device-width"> |
| 8 | <title>Polimorfismo</title> |
| 9 | <script> |
| 10 | function |
| 11 | aleatorio(menor, mayor) { |
| 12 | return menor + |
| 13 | Math.floor( |
| 14 | Math.random() * |
| 15 | (mayor - menor + 1)) |
| 16 | } |
| 17 | |
| 18 | |
| 19 | class SeMueve { |
| 20 | muevete() { |
| 21 | throw new Error("intf") |
| 22 | } |
| 23 | } |
| 24 | |
| 25 | |
| 26 | class PerroWeb |
| 27 | extends HTMLElement { |
| 28 | connectedCallback() { |
| 29 | this.x = 0 |
| 30 | this.y = 0 |
| 31 | this.innerHTML = "🐕" |
| 32 | this.style.position = "fixed" |
| 33 | this.style.fontSize = "2rem" |
| 34 | this.style.right = |
| 35 | `${this.x}px` |
| 36 | this.style.bottom = |
| 37 | `${this.y}px` |
| 38 | } |
| 39 | |
| 40 | muevete() { |
| 41 | this.x = (this.x + 30) % |
| 42 | window.innerWidth |
| 43 | this.style.right = |
| 44 | `${this.x}px` |
| 45 | } |
| 46 | } |
| 47 | customElements.define( |
| 48 | "perro-web", PerroWeb) |
| 49 | |
| 50 | |
| 51 | class AguilaWeb |
| 52 | extends HTMLElement { |
| 53 | connectedCallback() { |
| 54 | this.x = aleatorio(0, |
| 55 | Math.floor(innerWidth)) |
| 56 | this.y = aleatorio(0, |
| 57 | Math.floor(innerHeight)) |
| 58 | this.innerHTML = "🦅" |
| 59 | this.style.position = "fixed" |
| 60 | this.style.fontSize = "2.5rem" |
| 61 | this.style.left = `${this.x}px` |
| 62 | this.style.top = `${this.y}px` |
| 63 | } |
| 64 | |
| 65 | muevete() { |
| 66 | this.y = (this.y + 10) % |
| 67 | window.innerHeight |
| 68 | this.style.top = `${this.y}px` |
| 69 | } |
| 70 | } |
| 71 | customElements.define( |
| 72 | "aguila-web", AguilaWeb) |
| 73 | </script> |
| 74 | </head> |
| 75 | |
| 76 | <body> |
| 77 | <h1>Polimorfismo</h1> |
| 78 | <p> |
| 79 | <button onclick="mueve()"> |
| 80 | Mueve |
| 81 | </button> |
| 82 | </p> |
| 83 | <script> |
| 84 | const figuras = [ |
| 85 | new AguilaWeb(), |
| 86 | new PerroWeb(), |
| 87 | new AguilaWeb()] |
| 88 | for (let f of figuras) { |
| 89 | document.body.append(f) |
| 90 | } |
| 91 | function mueve() { |
| 92 | for (var f of figuras) { |
| 93 | f.muevete() |
| 94 | } |
| 95 | } |
| 96 | </script> |
| 97 | </body> |
| 98 | |
| 99 | </html> |