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Instance code of JS multi file upload

  • 2021-07-10 18:22:37
  • OfStack

Needless to say, the specific implementation code is as follows: 


<!DOCTYPE html>
<html>
<head lang="en">
 <meta charset="UTF-8">
 <title></title>
 <script src="./jquery-1.9.1.min.js"></script>
</head>
<body>
<form id= "uploadForm" action= "" method= "post" enctype ="multipart/form-data">
 <h1 > Multiple file upload  </h1>
 <table>
  <tr>
   <td > Upload file:  <input type ="file" name="file[]" id="file" multiple="multiple"/><a href="javascript:;" id="add">[+]</a></td>
  </tr>
  <tr>
   <td>
    <input type ="button" value=" Upload " id="but"/>
   </td>
  </tr>
 </table>
</form>
</body>
</html>
<script>
 // Add 
 $(document).on("click","#add",function(){
  var str_tr = "<tr>"+$(this).parents("tr").html()+"</tr>";
  //js  Replace string style 
  str_tr = str_tr.replace(/\+/,'-');
  var new_str_tr = str_tr.replace(/add/,'del');
  $(this).parents("tr").after(new_str_tr);
 })
 // Delete 
 $(document).on("click","#del",function(){
  $(this).parents("tr").remove();
 })
 // File upload 
 $("#but").click(function(){
  var formData = new FormData($( "#uploadForm" )[0]);
  $.ajax({
   url: 'http://localhost/demo/selfWork_MVC/easymvc/app/Views/Index/upload.php' ,
   type: 'POST',
   data: formData,
   async: false,
   cache: false,
   contentType: false,
   processData: false,
   success: function (returndata) {
    alert(returndata);
   },
   error: function (returndata) {
    alert(returndata);
   }
  });
 })
</script>

Related references:

Native JavaScript realizes asynchronous multi-file upload

js Implementation input type= "file" File Upload Sample Code

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