对于上传单个图像，像这样
<html> <head> <meta charset="UTF-8"> <title>AJAX image upload with, jQuery</title> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script> <script type="text/javascript"> $(document).ready(function (e) { $('#upload').on('click', function () { var file_data = $('#file').prop('files')[0]; var form_data = new FormData(); form_data.append('file', file_data); $.ajax({ url: 'http://localhost/ci/index.php/welcome/upload', // point to server-side controller method dataType: 'text', // what to expect back from the server cache: false, contentType: false, processdata: false, data: form_data, type: 'post', success: function (response) { $('#msg').html(response); // display success response from the server }, error: function (response) { $('#msg').html(response); // display error response from the server } }); }); }); </script> </head> <body> <p id="msg"></p> <input type="file" id="file" name="file" multiple /> <button id="upload">Upload</button> </body> </html>对于多张图片，您将不得不循环不同的内容
