laravel多图异步上传

Route::get('image-upload', 'HomeController@imageUpload');
Route::post('image-upload', 'HomeController@imageUploadPost')->name('image.upload');

<?php namespace App\Http\Controllers;
use Illuminate\Http\Request;

class HomeController extends Controller
{
    public function imageUpload()
    {
        return view('imageUpload');
    }

    public function imageUploadPost(Request $request)
    {
        request()->validate([
            'uploadFile' => 'required',
        ]);
        foreach ($request->file('uploadFile') as $key => $value) {
            $imageName = $value->getClientOriginalName();
            $value->move(public_path('images'), $imageName);
        }
        return response()->json(['success'=>'上传成功']);
    }
}

    <title>laravel异步上传多图</title>
<link href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet">
<script src="https://cdn.staticfile.org/jquery/3.3.1/jquery.min.js"></script><script src="https://cdn.staticfile.org/jquery.form/4.2.2/jquery.form.min.js"></script><style type="text/css">
        input[type=file] {
            display: inline;
        }
        #image_preview {
            padding: 10px;
        }
        #image_preview img {
            width: 200px;
            padding: 5px;
        }
    </style>
<div class="container mt-5">
    <h3>laravel5.7异步上传多图</h3>
    <form action="%7B%7B%20route('images.upload')%20%7D%7D" method="post" enctype="multipart/form-data">
        {{ csrf_field() }}
        <input type="file" id="uploadFile" name="uploadFile[]" multiple><input type="submit" class="btn btn-success btn-sm" name="submitImage" value="上传">
</form>
    <br><div id="image_preview"></div>
</div>

<script type="text/javascript">
    $("#uploadFile").change(function () {
        $('#image_preview').html("");
        let total_file = document.getElementById("uploadFile").files.length;
        for (let i = 0; i < total_file; i++) {
            $('#image_preview').append("<img src='" + URL.createObjectURL(event.target.files[i]) + "'>");
        }
    });
    $('form').ajaxForm(function () {
        alert("上传成功");
    });
</script>