svg自适应写法
<pre>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div style="30%; height:3.6rem;">
<svg width="100%" height="100%" viewBox="0,0,40,30" style="border:1px solid #cd0000;">
<rect x="0" y="0" width="40" height="30" fill="#cd0000"/>
</svg>
</div>
<script src="/moban/js/jquery.min.js"></script>
<script type="text/javascript">
(function(doc, win) {
var docEl = doc.documentElement,
resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',
/*如果屏幕尺寸发生了变化就会立即更新*/
recalc = function() {
/* var clientWidth = docEl.clientWidth;*/
var clientWidth = parseInt($('body').width());
if (!clientWidth) return;
docEl.style.fontSize = 20 * (clientWidth / 320) + 'px';
};
if (!doc.addEventListener) return;
/*如果窗口改变了大小 手机旋转了都会重新修改font-size属性*/
win.addEventListener(resizeEvt, recalc, false);
doc.addEventListener('DOMContentLoaded', recalc, false);
})(document, window);
$(function() {
$('.dds').on('click', function() {
$(this).attr('fill', 'green');
})
})
</script>
</body>
</html>
</pre>