Js+php實現(xiàn)異步拖拽上傳文件

更新時間：2015年06月23日 10:44:51 投稿：hebedich

本文給大家分享的是使用php結(jié)合js實現(xiàn)異步拖拽上傳文件的代碼，及示例，有需要的小伙伴可以參考下。

異步拖拽上傳文件--小實例

upload.html

<!DOCTYPE html>
<!--
To change this license header, choose License Headers in Project Properties.
To change this template file, choose Tools | Templates
and open the template in the editor.
-->
<html>
  <head>
    <title>TODO supply a title</title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <style>
      #box{
        width:150px;height: 150px;border: 1px solid red;
      }
    </style>
    <script type="text/javascript" src="XMLhttpReuest.js"></script>
    <script>
      window.onload = function () {
        var box = document.getElementById('box');
        box.ondragenter = function (e) {
          e.preventDefault();
        }
        box.ondragover = function (e) {
          e.preventDefault();
        }
        box.ondragleave = function (e) {
          e.preventDefault();
        }
        box.ondrop = function (e) {
          e.preventDefault();
          var file = e.dataTransfer.files[0];
          var formData = new FormData();
          formData.append('aa', file);
 
          var xml = ajaxFunction();
          xml.open("post", './upload.php', true);
          xml.send(formData);
          xml.onreadystatechange = function () {
            if (xml.readyState == 4 && xml.status == 200) {
              var flag = xml.responseText;
              console.log(flag);
              if (flag == 1) {
//                box.innerHTML="上傳成功";
                alert('上傳成功');
              }
            }
          }
        }
 
 
      }
    </script>
  </head>
  <body>
    <div id="box">
      請拖入上傳的文件
    </div>
  </body>
</html>

upload.php

復(fù)制代碼代碼如下:

<?php

header("Content-Type:text/html;charset=UTF-8");

if(is_uploaded_file($_FILES['aa']['tmp_name'])){

    move_uploaded_file($_FILES['aa']['tmp_name'], "./".iconv("UTF-8", "GBK", $_FILES['aa']['name']));

    echo '1';

}

XMLhttpReuest.js

function ajaxFunction()
 {
 var xmlHttp;
 try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
 catch (e)
  {
 // Internet Explorer
  try
   {
   xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
   }
  catch (e)
   {
   try
     {
     xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
     }
   catch (e)
     {
     alert("您的瀏覽器不支持AJAX！");
     return false;
     }
   }
  }
  return xmlHttp;
}

以上所述就是本文的全部內(nèi)容了，希望大家能夠喜歡。

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