https://koumoto-ganka.com/js/default.js

1// JavaScript Document
2
3$(function() {
4    var topBtn = $('#page-top');    
5    topBtn.hide();
6    $(window).scroll(function () {
7        if ($(this).scrollTop() > 500) {
8            topBtn.fadeIn();
9        } else {
10            topBtn.fadeOut();
11        }
12    });
13    topBtn.click(function () {
14        $('body,html').animate({
15            scrollTop: 0
16        }, 500);
17        return false;
18    });
19});
20
21
22(function($){
23	$.fn.fontSize = function(options) {
24		
25		var defaultState = "small"
26		var keyName = "state";
27		
28		var defaults = { "data" : [
29			{
30				"target" : "body",
31				"size" : { "small":"12px", "medium":"14px", "large":"16px" }
32			}
33		]};
34		var setting = $.extend( defaults, options );
35		
36		var html = '<div id="j-font-size"><div id="j-font-size-small" class="small"><span>小</span></div><div id="j-font-size-medium" class="medium"><span>標準</span></div><div id="j-font-size-large" class="large"><span>大</span></div></div>';
37		var state;
38		var self = this;
39		
40		$(self).append(html);
41	
42		if(!(state = $.cookie(keyName))){
43			state = defaultState;
44		}
45		
46		$("#j-font-size-"+state).addClass("active");
47		setFontSize(state);
48
49				
50		$("#j-font-size>div").click(function(e){
51			var state = $(this).attr("id").replace("j-font-size-","");
52			
53			setFontSize(state);
54			
55			$("#j-font-size>div").removeClass("active");
56			$(this).addClass("active");
57						
58			$.cookie(keyName,state,{expires : 365, path : '/'});
59			
60		});
61		
62		function setFontSize(state){
63			var data = setting["data"];
64					
65			for(var i = 0; i < data.length; i++){
66				var target = data[i]["target"];
67				var size = data[i]["size"];
68				
69				$(target).css("font-size",size[state]);
70				
71			}
72		}
73	}
74})(jQuery);
75
76