Upload image with Laravel5.7

Upload images with Laravel5.7.
Configure routing to save images posted from view.

Route::get('/image/index', 'ImageIndexController@index');
Route::post('/image/index', 'ImageIndexController@store');

imageindex.blade.php

@extends('layouts.image')
@section('title', '画像管理')

@section('breadcrumb')
	@@parent
	<ul class="breadcrumb">
      <li itemscope="itemscope" itemtype="http://data-vocabulary.org/Breadcrumb" >
        <a href="/top" itemprop="url">
          <span itemprop="title">ホーム</span>
        </a>
      </li>
      <li itemscope="itemscope" itemtype="http://data-vocabulary.org/Breadcrumb" >
        <a href="/top" itemprop="url">
          <span itemprop="title">画像管理</span>
        </a>
      </li>
    </ul>
@endsection

@section('content')
<h2>画像管理</h2>
      <hr>
      <form action="/image/index" method="POST" enctype="multipart/form-data">
        <div id="drag-drop-area">
         <div class="drag-drop-inside">
          <p class="drag-drop-info">ここにファイルをアップロード</p>
          <p>または</p>
          <!-- <input type="file" value="ファイルを選択" name="image"> -->
          <p class="drag-drop-buttons"><input id="fileInput" type="file" value="ファイルを選択" name="image"></p>
              <!-- <input type="submit" value="送信"> -->
           </div>
          </div>
            

      <div class="button_wrapper remodal-bg">
        　<button type="submit" value="送信" id="square_btn" onClick="location.href='#modal'">登録</button>
      </div>
       </form> 

      <!-- remodal -->
      <div class="remodal" data-remodal-id="modal">
        <button data-remodal-action="close" class="remodal-close"></button>
        <h1>保存しますか</h1>
        <p>
          入力した内容で宜しいでしょうか？
        </p>
        <br>
        <button data-remodal-action="cancel" class="remodal-cancel">Cancel</button>
        <button data-remodal-action="confirm" class="remodal-confirm">OK</button>
      </div>
      <!-- /remodal -->

      <script>
      var fileArea = document.getElementById('drag-drop-area');
      var fileInput = document.getElementById('fileInput');

      fileArea.addEventListener('dragover', function(evt){
        evt.preventDefault();
        fileArea.classList.add('dragover');
      });

      fileArea.addEventListener('dragleave', function(evt){
        evt.preventDefault();
        fileArea.classList.remove('dragover');
      });

      fileArea.addEventListener('drop', function(evt){
        evt.preventDefault();
        fileArea.classList.remove('dragenter');
        var files = evt.dataTransfer.files;
        fileInput.files = files;
      });

      </script>
      
@endsection