How to call an on click action for button in Laravel 5?

Below is my submit button code.

{!! Form::submit('Update', array('class'=>'btn btn-primary','style'=>'width: 200px')) !!}

I want to change that by adding onclick event as below.

onclick="if( ! confirm('Are you sure you want to delete?')){return false;}">

How to code that in laravel?

via Chebli Mohamed