Upload on file change with Vue #vue

upload-file-with-vue.js

<input type="file" @change="previewFiles" ref="imagefile">

methods: {
   previewFiles(event) {
      const fileToUpload = this.$refs.imagefile.files[0];
      const formData     = new FormData();
      formData.append('fileToUpload', fileToUpload);
      this.$http.post(`url/to/upload/script`, formData)
        .then((res) => {
          ...
        })
        .catch((err) => { ... });
   }
}