laravel 表单和ajax 提交都要用csrf验证

<form action="{{ url('admin/category/update', [$data->id]) }}" method="post">
      @csrf
      <div class="form-group">
        <label for="exampleInputEmail1">分类名：</label>
        <input type="text" name="name" class="form-control" id="exampleInputEmail1" value="{{$data->name}}">
      </div>
      <div class="form-group">
          <select class="form-control" name="parent_id">
            @foreach($parent as $p)
            <option value="{{$p->id}}" @if($data->parent==$p->id) echo 'selected' @else @endif >{{$p->name}}</option>
            @endforeach
          </select>
      </div>
      
      <button type="submit" class="btn btn-default">Submit</button>
    </form>

表单要加上 blade指令  @csrf

2.ajax提交

HTML blade部分

<meta name="_token" content="{{ csrf_token() }}"/>

 ajax部分

 <script type="text/javascript">
        function del(id){
            if(confirm("确定删除分类"+id+"及下属分类")){
                $.ajax({

                    url:"{{ url('admin/category/destory') }}",
                    type:'post',
                    data: {id:id},
                    dataType: 'json',
                    headers: {
                        'X-CSRF-TOKEN': $('meta[name="_token"]').attr('content')
                    },
                    success:function(res){
                        console.log(res);
                    }
                });
            }
        }
    </script>

 加上 headers