<!DOCTYPE HTML PUBLIC>
<html>
<head>
<meta charset="utf-8">
<script src="//code.jquery.com/jquery-1.11.0.min.js"></script>
<title>使用html5 FileReader获取图片,并异步上传到服务器(not iframe)</title>
<style type="text/css">
body{margin: 0px; background:#f2f2f0;}
p{margin:0px;}
.title{color:#FFFF00; background:#000000; text-align:center; font-size:24px; line-height:50px; font-weight:bold;}
.file{position:absolute; 100%; font-size:90px;}
.filebtn{display:block; position:relative; height:110px; color:#FFFFFF; background:#06980e; font-size:48px; line-height:110px; text-align:center; cursor:pointer; border: 3px solid #cccccc;}
.filebtn:hover{background:#04bc0d;}
.showimg{margin:10px auto 10px auto; text-align:center;}
</style>
<script type="text/javascript">
window.onload = function(){
// 选择图片
document.getElementById('img').onchange = function(){
var img = event.target.files[0];
// 判断是否图片
if(!img){
return ;
}
// 判断图片格式
if(!(img.type.indexOf('image')==0 && img.type && /.(?:jpg|png|gif)$/.test(img.name)) ){
alert('图片只能是jpg,gif,png');
return ;
}
var reader = new FileReader();
reader.readAsDataURL(img);
reader.onload = function(e){ // reader onload start
// ajax 上传图片
$.post("server.php", { img: e.target.result},function(ret){
if(ret.img!=''){
alert('upload success');
$('#showimg').html('<img src="' + ret.img + '">');
}else{
alert('upload fail');
}
},'json');
} // reader onload end
}
}
</script>
</head>
<body>
<p class="title">使用html5 FileReader获取图片,并异步上传到服务器(not iframe)</p>
<p><input type="file" class="file" id="img"><label class="filebtn" for="img" title="JPG,GIF,PNG">请选择图片</label></p>
<p class="showimg" id="showimg"></p>
</body>
</html>