button like ajax + localStorage + php

index.html

<button class="supvideo">Мне нравится!</button>
<p> Количество просмотров <output id="statlike" >--</output></p>

like_add.php

<?php
    if (isset($_POST['name'])) {
    $fp = fopen('count.json', 'w');
    fwrite($fp, json_encode($_POST['name']));
    fclose($fp);
    } else {
        return false;
    }
?>

script.js

jQuery(function ($) {
  $('document').ready( function(){
    $.getJSON('/count.json', function (data) {
      console.log(data);
    $('#statlike').text(data);
  });
});
 
$('.supvideo').on('click', function(){
  if(localStorage.getItem('here') == 'was here' ){
       console.log('was here');
  } else {
    var count= parseInt($('#statlike').text());
    count+=1;
    localStorage.setItem('here', 'was here');
    console.log(localStorage.getItem('here'));
    $.ajax({
      url     : '/like_add.php',
      method  : 'post',
      data    : { 'name': count },
      success : function( response ) {
      }
    });
    $.getJSON('/count.json', function (data) {
      console.log(data);
      $('#statlike').text(data);
    });
  }
});
});