https://www.miyazakibunkahall.jp/contents/wp-content/themes/bunkahall/js/fontsize.js

1$(function(){
2
3  function setCookie(name, value, days){
4    var d = new Date();
5    d.setTime(d.getTime() + (days*24*60*60*1000));
6    document.cookie = name + "=" + value + ";expires=" + d.toUTCString() + ";path=/";
7  }
8
9  function getCookie(name){
10    var value = "; " + document.cookie;
11    var parts = value.split("; " + name + "=");
12    if(parts.length === 2) return parts.pop().split(";").shift();
13  }
14
15  function applySize(size){
16
17    if(size === 'large'){
18      $('html').addClass('active');
19    } else {
20      $('html').removeClass('active');
21    }
22
23    $('.c-size-btn-normal, .c-size-btn-large').removeClass('active');
24
25    if(size === 'large'){
26      $('.c-size-btn-large').addClass('active');
27    } else {
28      $('.c-size-btn-normal').addClass('active');
29    }
30  }
31
32  var saved = getCookie('fontSize');
33  if(saved){
34    applySize(saved);
35  }
36
37  $('.c-size-btn-normal').click(function(){
38    applySize('normal');
39    setCookie('fontSize','normal',30);
40  });
41
42  $('.c-size-btn-large').click(function(){
43    applySize('large');
44    setCookie('fontSize','large',30);
45  });
46
47});