How to add csrf token in jquery ajax request in Laravel

We can do that something like this

Add html meta tag in head

<meta name="csrf-token" content="{ csrf_token() }">

Then use header in ajax something like this

     $.ajax({
        headers: {
           'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
        },
        url: 'upload.php',
        data: form_data,                         
        type: 'post',
        success: function(response){
            alert(response); 
        }
     });