纯ajax 图片上传，ajax来post图片流给服务器。 <form id="frm"> <div id="box2" style="margin:0px auto; width:100%; min-height:150px; background:#FF9"> <input type="file" name="file1" id="file1" /> <input type="button" value="上传" id="upload"> </form>   //ajax 上传 $("#upload").click(function(){ var url = "http://mm.com/ajaxupload.php";   var formData = new FormData($( "#frm" )[0]); $.ajax({ url: url, … 继续阅读 →