<meta name="_token" content="{!! csrf_token() !!}">
<div class="ui form">
	<div class="field">
		<div class="ui fluid huge action input">
			<input type="text" id="address" name="address" placeholder="Адрес сервера...">
			<button id="check" class="ui button green">Загрузить данные</button>
		</div>
	</div>
</div>
----------------------------------------------
Route::post('/add-server', ['uses' => 'AddServerPageController@AddServerPostCheck', 'as'=>'postAddServerCheck']);
----------------------------------------------
public function AddServerPostCheck(Request $request)
{
	$check_address = $request->input('address');
	return Response::json(['msg'=>$check_address]);
}
----------------------------------------------
<script>
$(document).ready(function(){
	$('#check').click(function(e){
		var address = $('#address').val();
		var token  = $('meta[name=_token]').attr('content');
		e.preventDefault();
		$.ajaxSetup({ headers: { 'X-CSRF-TOKEN': token }});     
		var mydata = {};
		mydata['_token'] = token;           
		mydata['address'] = address;           
		
		$.ajax({
			method: "POST",
			url: "{{ URL::route('postAddServerCheck') }}",
			cache: false,
			data: mydata,
			dataType: 'json', 
			success: function (response) {
				$('#result').html(response['msg']);
			},
			error: function (data) {
                console.log('Error:', data);
            }
		});
    });	
});
</script>
----------------------------------------------