js实现带进度条提示的多视频上传功能

 <link rel="stylesheet" href="bootstrap.css" rel="external nofollow" > <script src="jquery.fileupload.js"></script> <script src="http://malsup.github.com/jquery.form.js"></script>

<div class="form-group">      <label>产品视频：</label>      <div class="videoUpfile">        <input type="file" name="avatarVideo" class="avatarVideo"><a class="btn deleteAvatarVideo" href="javascript:;" rel="external nofollow" rel="external nofollow" >删除</a>        <div class="videoMaterials">          <div class="progress">            <div class="progress-bar progress-bar-success progress-bar-striped" role="progressbar" aria-valuenow="45" aria-valuemin="0" aria-valuemax="100" style="width: 0%">              <span class="sr-only">0% Complete</span>            </div>          </div>          <div class="files"></div>          <div class="showimg"></div>          <input type="hidden" value="" name="video_id[]">          <p style="color: #b92c28" class="img_upload_info"></p>        </div>      </div>      <div class="videoUpfile">        <input type="file" name="avatarVideo" class="avatarVideo"><a class="btn deleteAvatarVideo" href="javascript:;" rel="external nofollow" rel="external nofollow" >删除</a>        <div class="videoMaterials">          <div class="progress">            <div class="progress-bar progress-bar-success progress-bar-striped" role="progressbar" aria-valuenow="45" aria-valuemin="0" aria-valuemax="100" style="width: 0%">              <span class="sr-only">0% Complete</span>            </div>          </div>          <div class="files"></div>          <div class="showimg"></div>          <input type="hidden" value="" name="video_id[]">          <p style="color: #b92c28" class="img_upload_info"></p>        </div>      </div></div>

//上传视频$(".avatarVideo").change(function() {  var _this = $(this);  _this.wrap("<form class='fileUploadeVideo' action='/admin/uploadimg/addVideo' method='post' enctype='multipart/form-data'></form>");  _this.parents('.fileUploadeVideo').ajaxSubmit({    dataType: 'json',    beforeSend: function () {      $(".progress").show();    },    uploadProgress: function (event, position, total, percentComplete) {      var percentVal = percentComplete + '%';      _this.parents('.videoUpfile').find(".progress-bar").width(percentComplete + '%');      _this.parents('.videoUpfile').find(".progress-bar").html(percentVal);      _this.parents('.videoUpfile').find(".sr-only").html(percentComplete + '%');    },    success: function (data) {      if(data.code==100) {        _this.parents('.videoUpfile').find(".files").html("文件名: " + data.video_title);        _this.parents('.videoUpfile').find("input[type=hidden]").val(data.video_id);        alert("上传成功!");      }else{        alert("上传失败");      }    },    error: function () {      alert("上传失败");    }  });