form表单是整个页面跳到服务器的地址然后提交数据；
ajax是往这个地址post数据
<form style="padding:0px;margin:0px;" target="upload" action="http://115.28.222.129:8080/cgi-bin/upload.cgi" id="uploadForm" name="uploadForm" encType="multipart/form-data" method="post"> <input name="file" type="file" multiple /> <input type="submit" value="submit"/> </form> //这个可以指定返回的页面是隐藏的iframe元素 <iframe name="upload" style="display:none"></iframe>
转载于:https://www.cnblogs.com/diligenceday/p/3730594.html
