Created
March 20, 2016 07:05
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JS Bin // source http://jsbin.com/yacivicuga
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta name="viewport" content="width=device-width"> | |
| <title>JS Bin</title> | |
| <style id="jsbin-css"> | |
| #ball { | |
| height: 6px; | |
| width: 6px; | |
| background-color: #00f; | |
| border-radius: 100%; | |
| position: absolute; | |
| top: 120px; | |
| left: 177px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="ball"></div> | |
| <button id="pause">Pause / Run</button> | |
| <button id="reset">Reset</button> | |
| <img src="https://media.giphy.com/media/3o7WTN8FmMgK9hrZyU/giphy.gif" alt=""> | |
| <script id="jsbin-javascript"> | |
| var pos = 0; | |
| var MAX = 100; | |
| var freq = 53; | |
| var dist = 280; | |
| var running = false; | |
| function move(force) | |
| { | |
| if(!force && !running) return pos; | |
| pos = (pos + 1) % MAX; | |
| console.log('move'); | |
| var rate = pos / MAX; | |
| var theta = Math.PI * 2 * rate; | |
| var x = dist / 2 * (1 + Math.sin(theta)); | |
| ball.style.top = (x + 60) + 'px'; | |
| return pos; | |
| } | |
| setInterval(move, 1000 / freq); | |
| pause.onclick = function () { | |
| running = !running; | |
| }; | |
| reset.onclick = function () { | |
| pos = 969; | |
| console.log(move()); | |
| }; | |
| </script> | |
| <script id="jsbin-source-css" type="text/css">#ball { | |
| height: 6px; | |
| width: 6px; | |
| background-color: #00f; | |
| border-radius: 100%; | |
| position: absolute; | |
| top: 120px; | |
| left: 177px; | |
| }</script> | |
| <script id="jsbin-source-javascript" type="text/javascript">var pos = 0; | |
| var MAX = 100; | |
| var freq = 53; | |
| var dist = 280; | |
| var running = false; | |
| function move(force) | |
| { | |
| if(!force && !running) return pos; | |
| pos = (pos + 1) % MAX; | |
| console.log('move'); | |
| var rate = pos / MAX; | |
| var theta = Math.PI * 2 * rate; | |
| var x = dist / 2 * (1 + Math.sin(theta)); | |
| ball.style.top = (x + 60) + 'px'; | |
| return pos; | |
| } | |
| setInterval(move, 1000 / freq); | |
| pause.onclick = function () { | |
| running = !running; | |
| }; | |
| reset.onclick = function () { | |
| pos = 969; | |
| console.log(move()); | |
| };</script></body> | |
| </html> |
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| #ball { | |
| height: 6px; | |
| width: 6px; | |
| background-color: #00f; | |
| border-radius: 100%; | |
| position: absolute; | |
| top: 120px; | |
| left: 177px; | |
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| var pos = 0; | |
| var MAX = 100; | |
| var freq = 53; | |
| var dist = 280; | |
| var running = false; | |
| function move(force) | |
| { | |
| if(!force && !running) return pos; | |
| pos = (pos + 1) % MAX; | |
| console.log('move'); | |
| var rate = pos / MAX; | |
| var theta = Math.PI * 2 * rate; | |
| var x = dist / 2 * (1 + Math.sin(theta)); | |
| ball.style.top = (x + 60) + 'px'; | |
| return pos; | |
| } | |
| setInterval(move, 1000 / freq); | |
| pause.onclick = function () { | |
| running = !running; | |
| }; | |
| reset.onclick = function () { | |
| pos = 969; | |
| console.log(move()); | |
| }; |
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