csrf token mismatch in ajax laravel code example

Example 1: laravel csrf token ajax post

$.ajaxSetup({
    headers: {
        'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
    }
});

Example 2: name csrf token laravel mismatch

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

Example 3: laravel-csrf-token-mismatch

<input type="hidden" name="_token" id="token" value="{{ csrf_token() }}">