pagetotop.js?v=8

js gyakko.com collected 2026-10-04 21:08:12 UTC 1,250 bytes, 38 lines download raw bytes

1// ã¹ã ã¼ã¹ã¹ã¯ãã¼ã«
2$(function(){
3   // #ã§å§ã¾ãã¢ã³ã«ã¼ãã¯ãªãã¯ããå ´åã«å¦ç
4   $('a[href^=#]').click(function() {
5      // ã¹ã¯ãã¼ã«ã®éåº¦
6      var speed = 400;// ããªç§
7      // ã¢ã³ã«ã¼ã®å¤åå¾
8      var href= $(this).attr("href");
9      // ç§»ååãåå¾
10      var target = $(href == "#" || href == "" ? 'html' : href);
11      // ç§»ååãæ°å¤ã§åå¾
12      var position = target.offset().top-47;
13      // ã¹ã ã¼ã¹ã¹ã¯ãã¼ã«
14      $('body,html').animate({scrollTop:position}, speed, 'swing');
15//      $($.browser.safari? 'body' : 'html').animate({scrollTop:position}, speed, 'swing');
16      return false;
17   });
18});
19
20
21// ä»»æã®å ´æã¾ã§ã¹ã¯ãã¼ã«ããã¨ã³ã³ãã³ããè¡¨ç¤ºãã
22$(function(){
23   // ã¹ã¯ãã¼ã«ããã¨è¡¨ç¤ºããã¨ãªã¢
24   var element = $('#pagetop');
25   // ã¹ã¯ãã¼ã«éã®è¨å®
26   var position = 500; // åä½ï¼px
27   // ã¹ã¯ãã¼ã«ããã¨è¡¨ç¤ºããã¨ãªã¢ãéè¡¨ç¤º
28   element.hide();
29   $(window).scroll(function(){
30      // ã¹ã¯ãã¼ã«ããã¨è¡¨ç¤ºããã
31      if ($(this).scrollTop() > position) {
32         $(element).fadeIn();
33      } else {
34         $(element).fadeOut();
35      }
36   });
37});
38

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