從LC那裡看的圖片翻轉效果，改了下：
點擊圖片顯示示範效果
修改後的原始碼如下：
code
<!DOCTYPE html>
<html>
<head>
<title> ImageRotation </title>
<meta charset="utf-8"/>
<style type="text/css">
#demo { cursor:pointer; position:absolute;filter:progid:DXImageTransform.Microsoft.Matrix(sizingmethod="auto expand");}
</style>
</head>
<body>
<div id="container" style="width:500px;height:350px;position:relative;margin:0 auto">
<div id="demo">
<img src="http://images.cnblogs.com/cnblogs_com/bluedream2009/201609/o_mm.jpg" width="500" height="333" />
</div>
</div>
<script>
var Img = function() {
var g = function(id) { return document.getElementById(id); },
isIE = !!window.ActiveXObject,
el=document.createElement("div"),
rotateAtt=(isIE || el.style.transform==="")?"transform"://
el.style.WebkitTransform===""?"WebkitTransform"://webkit for chrome and safari
el.style.MozTransform===""?"MozTransform":"OTransform",//mozilla : opera
i = 0, sinDeg = 0, cosDeg = 0, timer = null ,
rotate = function(target, degree) {
target = g(target);
clearInterval(timer);
var orginW = target.clientWidth, orginH = target.clientHeight,
run=function(angle) {
if (isIE) { // IE
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 {
target.style[rotateAtt]= "rotate(" + angle + "deg)";
}
};
timer = setInterval(function() {
i += 10;
run(i);
if (i > degree - 1) {
i = 0;
clearInterval(timer);
}
}, 10);
}
return {rotate: rotate}
}();
window.onload = function() {
Img.rotate('demo', 360);
document.getElementById('demo').onclick = function() {
Img.rotate('demo', 360);
}
}
</script>
</body>
</html>
