页面引用了别人写的代码，但是找不到原作者
1.网页包含以下两个文件
<script type="text/javascript" src="__PUBLIC__/js/jquery-1.10.2.min.js"></script> <script type="text/javascript" src="__PUBLIC__/js/jquery.form.min.js"></script> 2.前台代码 <form action="ajax_goods.php" id="form1" name="form1" method="post" enctype="multipart/form-data"> <input type="file" name="FileInput" id="FileInput" /> <input type="submit" value="上传" /> <div id="output"></div> </form> </center> <script type="text/javascript"> $(document).ready(function() { var options = { target: '#output', // target element(s) to be updated with server response beforeSubmit: beforeSubmit, // pre-submit callback success: afterSuccess, // post-submit callback uploadProgress: OnProgress, //upload progress callback resetForm: true // reset the form after successful submit }; $('#form1').submit(function(){ $(this).ajaxSubmit(options); // always return false to prevent standard browser submit and page navigation return false; }); //function after succesful file upload (when server response) function afterSuccess() { //$('#submit-btn').show(); //hide submit button //$('#loading-img').hide(); //hide submit button //$('#progressbox').delay( 1000 ).fadeOut(); //hide progress bar } //function to check file size before uploading. function beforeSubmit(){ //check whether browser fully supports all File API if (window.File && window.FileReader && window.FileList && window.Blob) { if( !$('#FileInput').val()) //check empty input filed { $("#output").html("Are you kidding me?"); return false } var fsize = $('#FileInput')[0].files[0].size; //get file size var ftype = $('#FileInput')[0].files[0].type; // get file type //allow file types switch(ftype) { case 'image/png': case 'image/gif': case 'image/jpeg': case 'image/pjpeg': case 'text/plain': case 'text/html': case 'application/x-zip-compressed': case 'application/pdf': case 'application/msword': case 'application/vnd.ms-excel': case 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet': case 'video/mp4': break; default: $("#output").html("<b>"+ftype+"</b> Unsupported file type!"); return false } //Allowed file size is less than 5 MB (1048576) if(fsize>5242880) { $("#output").html("<b>"+bytesToSize(fsize) +"</b> Too big file! <br />File is too big, it should be less than 5 MB."); return false } //$('#submit-btn').hide(); //hide submit button //$('#loading-img').show(); //hide submit button $("#output").html(""); } else { //Output error to older unsupported browsers that doesn't support HTML5 File API $("#output").html("Please upgrade your browser, because your current browser lacks some new features we need!"); return false; } } //progress bar function function OnProgress(event, position, total, percentComplete) { //Progress bar //$('#progressbox').show(); // $('#progressbar').width(percentComplete + '%') //update progressbar percent complete //$('#statustxt').html(percentComplete + '%'); //update status text //if(percentComplete>50) // { // $('#statustxt').css('color','#000'); //change status text to white after 50% // } } //function to format bites bit.ly/19yoIPO function bytesToSize(bytes) { var sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB']; if (bytes == 0) return '0 Bytes'; var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024))); return Math.round(bytes / Math.pow(1024, i), 2) + ' ' + sizes[i]; } }); </script> 3.表单中action指向的文件就是异步提交过去的处理代码后台代码：
if(isset($_FILES["FileInput"]) && $_FILES["FileInput"]["error"]== UPLOAD_ERR_OK) { ############ Edit settings ############## $UploadDirectory = 'D:/phpStudy/WWW/OurMemory/Uploads/'; //specify upload directory ends with / (slash) ########################################## /* Note : You will run into errors or blank page if "memory_limit" or "upload_max_filesize" is set to low in "php.ini". Open "php.ini" file, and search for "memory_limit" or "upload_max_filesize" limit and set them adequately, also check "post_max_size". */ //check if this is an ajax request if (!isset($_SERVER['HTTP_X_REQUESTED_WITH'])){ die('this is not ajax request'); } //Is file size is less than allowed size. if ($_FILES["FileInput"]["size"] > 5242880) { die("File size is too big!"); } //allowed file type Server side check switch(strtolower($_FILES['FileInput']['type'])) { //allowed file types case 'image/png': case 'image/gif': case 'image/jpeg': case 'image/pjpeg': case 'text/plain': case 'text/html': //html file case 'application/x-zip-compressed': case 'application/pdf': case 'application/msword': case 'application/vnd.ms-excel': case 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet': case 'video/mp4': break; default: die('Unsupported File!'); //output error } $File_Name = strtolower($_FILES['FileInput']['name']); $File_Ext = substr($File_Name, strrpos($File_Name, '.')); //get file extention $Random_Number = rand(0, 9999999999); //Random number to be added to name. $NewFileName = $Random_Number.$File_Ext; //new file name if(move_uploaded_file($_FILES['FileInput']['tmp_name'], $UploadDirectory.$NewFileName )) { die('Success! File Uploaded.'); }else{ die('error uploading File!'); } } else { die('Something wrong with upload! Is "upload_max_filesize" set correctly?'); }
