jQuery PHP upload_multiple AJAX上传带预览功能，在火狐下完美运行，submit_form_process.php为上传代码。本Ajax上传程序利用multiple="multiple"属性实现添加多图功能，height:0 width:0 z-index: -1 是为了隐藏input，因为Chrome下不能使用display:none，否则无法添加文件，点击图片时则点击添加文件按钮。在jquery中创建FormData对象，为FormData对象添加数据，显示加载图片，第一个feedback数据直接append，其他的用before第1个（ .eq(0).before() ）放至最前面-jQuery PHP upload_multiple AJAX upload with preview function flawlessly in Firefox, submit_form_process.php to upload code. The program uses Ajax upload multiple = " multiple"　attribute to add more map features to achieve, height: 0　width: 0　z-index:-1　was to hide the input, because the next Chrome can not use display: none, or can not add files Click on the picture then click the Add File button. FormData objects created in jquery add data FormData object display loaded images, the first feedback data directly append, the other with before the first one (. Eq (0). Before ()) put to the top