//关于FileReader对象 http://blog.csdn.net/zk437092645/article/details/8745647
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
//设置图片上传后预览的div样式
<style type="text/css">
#preview,
.img,
img {
width: 200px;
height: 200px;
}
#preview {
border: 1px solid #000;
}
</style>
</head>
<body>
<div id="preview"></div>
<input type="file" onchange="preview(this)"/>
//图片上传和预览
<script type="text/javascript">
function preview(file) {
var prevDiv = document.getElementById('preview');
if (file.files && file.files[0]) {
var reader = new FileReader();
reader.onload = function(evt) {
prevDiv.innerHTML = ' <img src="' + evt.target.result + '" /> ';
}
reader.readAsDataURL(file.files[0]);
} else {
prevDiv.innerHTML = '<div class="img" style="filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale,src=\'' + file.value + '\'"><div>';
}
}
</script>
</body>
</html>
