<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>html5 图片上传预览</title>
<style>
#preview {
width: 300px;
height: 300px;
overflow: hidden;
}
#preview img {
width: 100%;
height: 100%;
}
</style>
<script src="../jquery/jquery-1.8.3.js"></script>
<script type="text/javascript">
function preview1(file) {
var img = new image(), url = img.src = url.createobjecturl(file)
var $img = $(img)
img.onload = function() {
url.revokeobjecturl(url)
$('#preview').empty().append($img)
}
}
function preview2(file) {
var reader = new filereader()
reader.onload = function(e) {
var $img = $('<img>').attr("src", e.target.result)
$('#preview').empty().append($img)
}
reader.readasdataurl(file)
}
$(function() {
$('[type=file]').change(function(e) {
var file = e.target.files[0]
preview1(file)
})
})
</script>
</head>
<body>
<form enctype="multipart/form-data" action="" method="post">
<input type="file" name="imageupload"/>
<div id="preview" style="width: 300px;height:300px;border:1px solid gray;"></div>
</form>
</body>
</html>
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