仿微信js-sdk wx.previewImage javascript实现，支持图片预览，滑动切换，双指缩放，图片缓存;
it's a plugin previewImage for mobile html5 which support for picture preview, slide switch, double finger zoom, picture caching
Import dist/previewImage.min.js to your project:
<script src="dist/previewImage.min.js"></script>
<script>
var obj = {
urls : ['1.png','2.png','3.png'],
current : '1.png'
};
previewImage.start(obj);
</script>And you can import dist/md5.js to your project,if imported it is uesd to get the hash for md5(image.src) else the hash is image.src;
<script src="dist/md5.js"></script>
<script src="dist/previewImage.min.js"></script>
<script>
var obj = {
urls : ['1.png','2.png','3.png'],
current : '1.png'
};
previewImage.start(obj);
</script>