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https://www.macaushimbun.com/2023/wp-content/themes/opinion_tcd018/js/scroll.js?ver=4.11.3

js macaushimbun.com collected 2026-10-02 17:51:13 UTC 458 bytes, 23 lines download raw bytes

1jQuery.easing.quart = function (x, t, b, c, d) {
2	return -c * ((t=t/d-1)*t*t*t - 1) + b;
3};
4
5
6jQuery(function($){
7	var topBtn = $('#return_top');	
8	topBtn.hide();
9	$(window).scroll(function () {
10		if ($(this).scrollTop() > 100) {
11			topBtn.fadeIn();
12		} else {
13			topBtn.fadeOut();
14		}
15	});
16	//ƒXƒNƒ[ƒ‹‚µ‚ăgƒbƒv
17    topBtn.click(function () {
18		$('body,html').animate({
19			scrollTop: 0
20		}, 500, 'quart');
21		return false;
22    });
23});

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