Ajax serialize() 表單進行序列化方式上傳文件

<form id="uploadForm" action="" method="post" enctype="multipart/form-data"> 
 <p>上傳文件：<input type ="file" name="file"/></p> 
 <input type="submit" value="上傳"/> 
</form>

$.ajax({ 
 url: "", 
 type: "POST", 
 data: $('#uploadForm').serialize(), 
 success: function(data) { 
 }, 
 error: function(data) {
 } 
});

<form id="uploadForm"> 
 <p>上傳文件：<input type="file" name="file" /></p> 
 <input type="button" value="上傳" onclick="upload()" /> 
</form>
function upload() { 
 var formData = new FormData($("#uploadForm")[0]); 
 $.ajax({ 
 url: '', 
 type: 'POST', 
 data: formData, 
 async: false, 
 cache: false, 
 contentType: false, 
 processData: false, 
 success: function(data) {
 }, 
 error: function(data) { 
 } 
 }); 
}