FormDate文件上传进度条

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
  <title>上传</title>
  <link rel="stylesheet" href="/static/js/frame/weui/weui.min.css">
  <link rel="stylesheet" href="/static/js/frame/weui/jquery-weui.css">
  <style>
    .weui_btn_area{
      position: relative;
    }
    input[type=file]{
      position: absolute;
      left:0;
      top:0;
      width: 100%;
      height:100%;
      opacity: 0;
    }
  </style>
</head>

<body>
<form id="form1">
<div class="weui_progress">
  <div class="weui_progress_bar">
    <div class="weui_progress_inner_bar js_progress" style="width: 0%;"></div>
  </div>
</div>
<div class="weui_btn_area">
  <a href="javascript:;" class="weui_btn weui_btn_primary" id="btnStartProgress">上传</a>
  <input type="file" name="fileToUpload" id="fileToUpload" multiple="multiple" onchange="uploadFile();"/>
</div>
  <div class="weui_btn_area">
    <a href="javascript:;" class="weui_btn weui_btn_primary" onclick="cancelFile()" id="cancel">取消</a>
  </div>
</form>
  <script src="http://cdn.bootcss.com/jquery/2.2.4/jquery.min.js"></script>
  <script type="text/javascript">
    var xhr;
    function uploadFile() {
      var fd = new FormData();
      console.log(document.getElementById('fileToUpload').files);
      fd.append("fileToUpload", document.getElementById('fileToUpload').files[0]);
      xhr = new XMLHttpRequest();
      xhr.upload.addEventListener("progress", uploadProgress, false);
      xhr.addEventListener("load", uploadComplete, false);
      xhr.addEventListener("error", uploadFailed, false);
      xhr.addEventListener("abort", uploadCanceled, false);
      xhr.open("POST", "/index/file"); //修改成自己的接口
      xhr.send(fd);
    }
    function cancelFile() {
      xhr.abort();
      $('.js_progress').css('width','0');
    }
    function uploadProgress(e) {
      if (e.lengthComputable) {
        var percentComplete = Math.round(e.loaded * 100 / e.total);
        $('.js_progress').css('width',percentComplete.toString() + '%');
      } else {
        return false
      }
    }

    function uploadComplete(e) {
      console.log(e);
      alert('上传成功');
    }

    function uploadFailed(e) {
      console.log(e);
      alert("上传失败");
    }

    function uploadCanceled(e) {
      console.log(e);
      alert("上传取消");
    }
  </script>
</body>

</html>
FormDate文件上传进度条

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