提示：您可以先修改部分代碼再運行
<!DOCTYPE html><html><head> <title>抽獎</title> <style type="text/css"> #container{width: 400px;height: 400px;position: relative;margin: 0 auto;} #demo{position: absolute;filter: progid:DXImageTransform.Microsoft.Matrix(sizingmethod="auto expand");} </style></head><body > <div id="container"> <div id="demo"> </div> </div> <input id="test" type="button" value="抽獎" /> <input id="restart" type="button" value="再抽一次" /> <div id="msg"> </div> <script type="text/javascript"> var m$ = function (id) { return document.getElementById(id); } var ua = navigator.userAgent; var isIE = /msie/i.test(ua) && !window.opera; var i = 1, sinDeg = 0, cosDeg = 0, timer = null; var mRotate = function () { var rotate = function (target, msg) { target = m$(target); var orginW = target.clientWidth, orginH = target.clientHeight; clearInterval(timer); function run(angle) { if (isIE) { cosDeg = Math.cos(angle * Math.PI / 180); sinDeg = Math.sin(angle * Math.PI / 180); with (target.filters.item(0)) { M11 = M22 = cosDeg; M12 = -(M21 = sinDeg); } target.style.top = (orginH - target.offsetHeight) / 2 + "px"; target.style.left = (orginW - target.offsetWidth) / 2 + "px"; } else if (target.style.MozTransform !== undefined) { target.style.MozTransform = "rotate(" + angle + "deg)"; } else if (target.style.OTransform !== undefined) { target.style.OTransform = "rotate(" + angle + "deg)"; } else if (target.style.webkitTransform !== undefined) { target.style.webkitTransform = "rotate(" + angle + "deg)"; } else { target.style.transform = "rotate(" + angle + "deg)"; } } var tmp = -900; var m = -parseInt(Math.random() * 360); timer = setInterval(function () { if (i > 3000) { tmp = parseInt(tmp * 0.99); if (tmp > m) { tmp = m; clearInterval(timer); msg(m); } run(tmp); } else if (i > 1000) { i = i + 45; run(i); } else { i = parseInt((i + 1) * 1.01); run(i); } }, 50); } return { rotate: rotate } } (); function showMsg() { mRotate.rotate("demo", function msg(m) { if (m > -90 && m < -30) { m$("msg").innerHTML += "22222222"; } else if (m > -150 && m < -90) { m$("msg").innerHTML += "333333333"; } else if (m > -210 && m < -150) { m$("msg").innerHTML += "444444"; } else if (m > -270 && m < -210) { m$("msg").innerHTML += "5555555"; } else if (m > -330 && m < -270) { m$("msg").innerHTML += "6666666"; } else { m$("msg").innerHTML += "111111111"; } m$('restart').style.display = "block"; }); } window.onload = function () { m$('test').onclick = function () { m$('test').style.display = "none"; showMsg(); } m$('restart').onclick = function () { m$('restart').style.display = "none"; if (isIE) { m$("demo").style.top = "0px"; m$("demo").style.left = "0px"; } else if (m$("demo").style.MozTransform !== undefined) { m$("demo").style.MozTransform = 'rotate(0deg)'; } else if (m$("demo").style.OTransform !== undefined) { m$("demo").style.OTransform = 'rotate(0deg)'; } else if (m$("demo").style.webkitTransform !== undefined) { m$("demo").style.webkitTransform = 'rotate(0deg)'; } else { m$("demo").style.transform = 'rotate(0deg)'; } m$('test').style.display = "block"; i = 0; } } </script></body></html> </td> </tr></table>
提示：您可以先修改部分代碼再運行
