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Simple JavaScript Memo Puzzle
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <title>Memo Puzzle</title> | |
| <style> | |
| body { | |
| text-align: center; | |
| } | |
| #playarea { | |
| width: 200px; | |
| margin: 0 auto; | |
| text-align: center; | |
| border: 2px solid #000; | |
| overflow:hidden; | |
| } | |
| #playarea .card { | |
| box-sizing: border-box; | |
| display: block; | |
| float:left; | |
| width: 50px; | |
| height: 50px; | |
| border: 2px solid #000; | |
| transition: background-color 600ms ease-in; | |
| transition: border-color 600ms ease-in; | |
| } | |
| #playarea .selected { | |
| border-color: #000; | |
| transition: none; | |
| } | |
| #playarea .matched { | |
| box-shadow: inset 0 0 0 1px #fff; | |
| } | |
| .blink-it{ | |
| animation: blinker 1s linear infinite; | |
| } | |
| @keyframes blinker { | |
| 50% { opacity: 0 } | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <button onclick="init()">Reset!</button> | |
| <div id="playarea"></div> | |
| <script> | |
| const playarea = document.getElementById('playarea') | |
| const items = '#f00 #033 #0f0 #03f #f00 #660 #660 #ff0 #606 #f0f #f60 #033 #f0f #366 #0f0 #606 #03f #f60 #ff0 #366' | |
| const atual = [] | |
| const neutralColor = '#666' | |
| playarea.addEventListener('click', evt => { | |
| const target = evt.target | |
| if (target.classList.contains('card') && !target.classList.contains('selected')) | |
| play(target) | |
| }) | |
| window.addEventListener('load', init) | |
| function init () { | |
| atual.length = 0; | |
| playarea.innerHTML = items | |
| .split(' ') | |
| .sort(_ => .5 - Math.random()) | |
| .map(code => `<div class="card" data-code="${code}" style="background-color:${code}"></div>`) | |
| .join('') | |
| playarea.classList.add('blink-it') | |
| setTimeout(_ => { | |
| Array.from(playarea.querySelectorAll('.card')) | |
| .forEach(card => card.style.backgroundColor = neutralColor) | |
| playarea.classList.remove('blink-it') | |
| }, 3000) | |
| } | |
| function play (target) { | |
| target.classList.add('selected') | |
| target.style.backgroundColor = target.dataset.code | |
| setTimeout(_ => { | |
| if (!atual.length) { | |
| atual.push(target) | |
| return | |
| } | |
| let prev = atual.pop() | |
| if (target.dataset.code === prev.dataset.code) { | |
| target.classList.add('matched') | |
| prev.classList.add('matched') | |
| return | |
| } | |
| target.classList.remove('selected') | |
| target.style.backgroundColor = prev.style.backgroundColor = '#666' | |
| prev.classList.remove('selected') | |
| }, 600) | |
| } | |
| </script> | |
| </body> | |
| </html> |
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