Example code for verifying the size and type of uploaded files using jquery-JS Tutorial-php.cn

Example code for verifying the size and type of uploaded files using jquery

怪我咯

Release： 2017-04-01 09:39:53

Original

1494 people have browsed it

jqueryimplementationupload file Size type verification example

<!DOCTYPE html>
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <script src="jquery1.8/jquery-1.8.0.js" type="text/javascript"></script>
  <script type="text/javascript">
    $(document).ready(function () {
      $("#myFile").change(function () {
        var filepath = $("input[name=&#39;myFile&#39;]").val();
        var extStart = filepath.lastIndexOf(".");
        var ext = filepath.substring(extStart, filepath.length).toUpperCase();
        if (ext != ".BMP" && ext != ".PNG" && ext != ".GIF" && ext != ".JPG" && ext != ".JPEG") {
          alert("图片限于bmp,png,gif,jpeg,jpg格式");
          $("#fileType").text("")
          $("#fileSize").text("");
          return false;
        } else { $("#fileType").text(ext) }
        var file_size = 0;
        if ($.browser.msie) {
          var img = new Image();
          img.src = filepath;
          while (true) {
            if (img.fileSize > 0) {
              if (img.fileSize > 3 * 1024 * 1024) {
                alert("图片不大于100MB。");
              } else {
                var num03 = img.fileSize / 1024;
                num04 = num03.toFixed(2)
                $("#fileSize").text(num04 + "KB");
              }
              break;
            }
          }
        } else {
          file_size = this.files[0].size;
          var size = file_size / 1024;
          if (size > 10240) {
            alert("上传的图片大小不能超过10M！");
          } else {
            var num01 = file_size / 1024;
            num02 = num01.toFixed(2);
            $("#fileSize").text(num02 + " KB");
          }
        }
        return true;
      });
    });
  </script>
  <title>无标题文档</title>
</head>
<body>
  <table width="500" cellspacing="0" cellpadding="0">
    <tr>
      <td width="72" id="fileType">
      </td>
      <td width="242">
        <input type="file" name="myFile" id="myFile" />
      </td>
      <td width="184" id="fileSize" class="fileSize">
      </td>
    </tr>
  </table>
</body>
</html>

Copy after login

The above is the detailed content of Example code for verifying the size and type of uploaded files using jquery. For more information, please follow other related articles on the PHP Chinese website!