FormData的使用

适用于文件上传，把对象直接给他。也可以ajax提交

[javascript]

使用FormData提交表单及上传文件：

[html]

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title> FormData Demo </title>
<script src="//code.jquery.com/jquery-1.11.0.min.js"></script>
<script type="text/javascript">
<!--
function fsubmit(){
var data = new FormData($('#form1')[0]);
$.ajax({
url: 'server.php',
type: 'POST',
data: data,
dataType: 'JSON',
cache: false,
processData: false,
contentType: false
}).done(function(ret){
if(ret['isSuccess']){
var result = '';
result += 'name=' + ret['name'] + '<br>';
result += 'gender=' + ret['gender'] + '<br>';
result += '<img src="' + ret['photo'] + '" width="100">';
$('#result').html(result);
}else{
alert('提交失敗');
}
});
return false;
}
-->
</script>
</head>
<body>
<form name="form1" id="form1">
<p>name:<input type="text" name="name" ></p>
<p>gender:<input type="radio" name="gender" value="1">male <input type="radio" name="gender" value="2">female</p>
<p>photo:<input type="file" name="photo" id="photo"></p>
<p><input type="button" name="b1" value="submit" οnclick="fsubmit()"></p>
</form>
<div id="result"></div>
</body>
</html>