Question

我希望在上传到s3 Bucket之前重命名该图像以避免重复图像（s3将用旧的替换新图像，如果有任何相同的文件要上传）在javaScript中

<!DOCTYPE html>
<html>

<body>

  A FileUpload object:
  <input type="file" id="upload" name="filename">

  <p>Click the buttons below to display and/or change the value of the name attribute of the file button above.</p>

  <button onclick="display()">Display name</button>
  <button onclick="change()">Change name</button>

  <script>
    function display() {
      var fullPath = document.getElementById('upload').value;
      if (fullPath) {
        var startIndex = (fullPath.indexOf('\\') >= 0 ? fullPath.lastIndexOf('\\') : fullPath.lastIndexOf('/'));
        var filename = fullPath.substring(startIndex);
        if (filename.indexOf('\\') === 0 || filename.indexOf('/') === 0) {
          filename = "hello" + filename.substring(1);

        }
        alert(filename);
      }

    }

    function change() {
      var x = document.getElementById("myFile").name = "newFileName";
      alert("The name was changed to: " + x);
    }
  </script>

</body>

</html>

在上面的代码中，它只是设置文件名并尝试附加某些内容（我们想要的是“随机数”）。 但我想将带有新名称的图片上传到s3存储桶

如何在图像上传到s3存储桶之前重命名图像？

0 个答案: