How to upload and delete files from dropzone.js?

@dedrick 

To upload and delete files using dropzone.js, follow these steps:

1. Set up dropzone.js in your HTML file. Include the dropzone.css and dropzone.js files in the head section of your HTML file:

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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/dropzone/5.9.2/min/dropzone.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/dropzone/5.9.2/min/dropzone.min.js"></script>

1. Add a dropzone element in your HTML file where users can drop files to upload:

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<form action="/upload" class="dropzone">
  <div class="fallback">
    <input name="file" type="file" multiple />
  </div>
</form>

1. Initialize dropzone.js in your JavaScript file and specify the options for uploading and deleting files:

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Dropzone.options.myDropzone = {
  url: "/upload",
  paramName: "file",
  init: function() {
    this.on("complete", function(file) {
      if (this.getUploadingFiles().length === 0 && this.getQueuedFiles().length === 0) {
        this.removeAllFiles();
      }
    });
  }
};

1. Handle file upload and deletion on the server-side. When a file is uploaded, save it to a specific location on your server. When a file needs to be deleted, remove it from the server.
2. To delete a file from dropzone.js, you can use the removeFile method. For example, to delete a file when a button is clicked:

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document.getElementById("deleteFileButton").addEventListener("click", function() {
  myDropzone.removeFile(file);
});

By following these steps, you can upload and delete files from dropzone.js in your web application.