jQuery实现九宫格抽奖效果代码实例
分享一段代码实例，它实现了九宫格抽奖效果。
代码实例如下:
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<!doctype html> <html> <head> <meta charset="utf-8"> <meta name="author" content="http://www.gaodaima.com/" /> <title>搞代码</title> <style type="text/css"> img { width: 20px; height: 16px; } .active { border: red 1px solid; background: red; } </style> <script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script> <script> var width = 8; var height = 8; var dirs = ["left", "right", "up", "down"] var dir = { left: function (x, y) { return { x: x == 0 ? width - 1 : x - 1, y: y } }, right: function (x, y) { return { x: x == width - 1 ? 0 : x + 1, y: y } }, up: function (x, y) { return { x: x, y: y == 0 ? height - 1 : y - 1, } }, down: function (x, y) { return { x: x, y: y == height - 1 ? 0 : y + 1, } } } var times = ((Math.random() * 500) >>> 0) + 50; var pos = { x: (Math.random() * width) >>> 0, y: (Math.random() * height) >>> 0, } function next(i) { $("tr:nth-child(" + (pos.x + 1) + ") td:nth-child(" + (pos.y + 1) + ")").removeClass("active"); pos = dir[dirs[(Math.random() * 4) >>> 0]](pos.x, pos.y); $("tr:nth-child(" + (pos.x + 1) + ") td:nth-child(" + (pos.y + 1) + ")").addClass("active"); if (times-- < 0) { return; } setTimeout(next, i - 1); } window.onload = function () { next(50); } </script> </head> <body> <table border="" cellspacing="" cellpadding=""> <tr> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> </tr> <tr> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> </tr> <tr> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> </tr> <tr> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> </tr> <tr> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> </tr> <tr> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> </tr> <tr> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> </tr> <tr> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> <td><img src="" alt="" /></td> </tr> </table> </body> </html> |
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