https://k-laboratory-blog.com/wp-content/plugins/rich-table-of-content/js/rtoc_return.js?ver=7.1.3

1jQuery(function ($) {
2	// 目次へ戻るボタン（スマホのみ）
3	const ua = navigator.userAgent;
4	if (typeof rtocBackButton === 'undefined'){
5		return;
6	}
7	const rtocBackBtn = rtocBackButton.rtocBackButton;
8	if (rtocBackBtn == 'on') {
9		if (ua.indexOf('iPhone') > -1 || (ua.indexOf('Android') > -1 && ua.indexOf('Mobile') > -1)) {
10			jQuery('body').append('<div id="rtoc_return"><a href="#rtoc-mokuji-wrapper">' + rtocBackText.rtocBackText + '</a></div>');
11			$(window).on('load scroll', function () {
12				if ($(this).scrollTop() > 1000) {
13					$('#rtoc_return').fadeIn('slow');
14				} else {
15					$('#rtoc_return').fadeOut('slow');
16				}
17			});
18			$('a[href^="#rtoc-mokuji-wrapper"]').click(function () {
19				var speed = 400;
20				var href = $(this).attr('href');
21				var target = $(href == '#' || href == '' ? 'html' : href);
22				var position = target.offset().top;
23				$('html, body').animate({ scrollTop: position }, speed, 'swing');
24				return false;
25			});
26		}
27
28		// PCで表示するにチェックが入っている場合
29		if (rtocBackDisplayPC.rtocBackDisplayPC) {
30			if (!(navigator.userAgent.indexOf('iPhone') > 0 || (navigator.userAgent.indexOf('Android') > 0 && navigator.userAgent.indexOf('Mobile') > 0) || navigator.userAgent.indexOf('iPad') > 0 || navigator.userAgent.indexOf('Android') > 0)) {
31				jQuery('body').append('<div id="rtoc_return"><a href="#rtoc-mokuji-wrapper">' + rtocBackText.rtocBackText + '</a></div>');
32				$(window).on('load scroll', function () {
33					if ($(this).scrollTop() > 600) {
34						$('#rtoc_return').fadeIn('slow');
35					} else {
36						$('#rtoc_return').fadeOut('slow');
37					}
38				});
39				$('a[href^="#rtoc-mokuji-wrapper"]').click(function () {
40					const widgetDocument = document.querySelector('#widget-tracking #rtoc-mokuji-widget-wrapper');
41					if(widgetDocument){
42						widgetDocument.querySelector('.rtoc-mokuji').scrollTo(0, 0);
43					}
44					var speed = 400;
45					var href = $(this).attr('href');
46					var target = $(href == '#' || href == '' ? 'html' : href);
47					var position = target.offset().top;
48					$('html, body').animate({ scrollTop: position }, speed, 'swing');
49					return false;
50				});
51			}
52		}
53	}
54
55	const back_button = document.querySelector('#rtoc_return');
56	const back_button_link = document.querySelector('#rtoc_return a');
57
58	if (rtocButtonPosition.rtocButtonPosition == 'left') {
59		if(back_button){
60			back_button.classList.add('back_button_left');
61		}
62	} else if (rtocButtonPosition.rtocButtonPosition == 'right') {
63		if(back_button){
64			back_button.classList.add('back_button_right');
65		}
66	}
67	if (rtocVerticalPosition.rtocVerticalPosition.length) {
68		if(back_button_link){
69			back_button_link.style.bottom = rtocVerticalPosition.rtocVerticalPosition + 'px';
70		}
71
72	}
73});