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Javascript Fromdata 与jQuery 实现Ajax文件上传以及文件的删除
前端HTML代码:
<!DOCTYPE html><html><head> <title>ajax</title> <script type="text/javascript" src="js/jquery.js"></script> <meta charset="utf-8" /> <style type="text/css"> form{ position: relative; } ul li{ list-style: none; } .divide ul li img{ width: 100px; border: 3px solid #eeeeee; } .selected{ border: 3px solid #0099aa; } form input{ position: absolute; top: 0; left: 0; padding: 20px; opacity: 0; } button{ padding: 20px; background: #0099aa; border-radius: 3px; border: 2px solid #333333; color: #ffffff; font-size: 18px; } .loading{ display: none; } pre{ background: #000; color: #fff; } textarea{ outline: none; border: none; width: 90%; height: 400px; background: none; color: #fff; font-size: 14px; line-height: 14px; } </style></head><body> <input type="file" id="file" multiple="multiple" /> <div class="loading"><img src="loading.gif" /></div> <div class="divide"> <ul> </ul> </div> <script type="text/javascript"> $(function(){ var tt; $("#file").change(function(){ data = new FormData(); data.append(‘files‘, $(‘#file‘)[0].files[0]); $.ajax({ type: "post", url: "upload.php", processData: false, contentType: false, data: data, success: function(a, b, c){ $("div ul").append("<li class=‘del‘>文件上传成功!<img src=http://www.mamicode.com/‘" + a + "‘ /> <input type=‘text‘ value=http://www.mamicode.com/‘"+a+"‘ /></li>"); tt = a; $(".del").bind("click", function(){ $.ajax({ type: "post", url: "del.php", data: { a : tt, }, success: function(a, b, c){ alert(a); } }); $(this).hide(200); }); } }); }); }); </script></body></html>
执行文件上传 upload.php
<?php $origname = $_FILES["files"]["name"]; $ext = strtolower(substr($origname, strrpos($origname, ".")+1)); $tmpfile = $_FILES["files"]["tmp_name"]; $filename = "./upload/".time().".".$ext; move_uploaded_file( $tmpfile, $filename); echo $filename;?>
执行文件删除 del.php
<?phpif(unlink($_POST["a"])){ echo "文件删除成功!";}else{ echo "文件删除失败!";}?>
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