☰

Scroll Up

Tool to let you scroll to the top of the page

当前为 2017-08-30 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Scroll Up
  3. // @version      1.01
  4. // @description  Tool to let you scroll to the top of the page
  5. // @author       A Meaty Alt
  6. // @exclude      https://fairview.deadfrontier.com/onlinezombiemmo/index.php?page=21
  7. // @include      /fairview.deadfrontier.com/
  8. // @exclude      https://fairview.deadfrontier.com/onlinezombiemmo/ExternalLoginReg.php
  9. // @exclude      http://chat.deadfrontier.com
  10. // @grant        none
  11. // @namespace 
  12. // ==/UserScript==
  13.  
  14. (function() {
  15.     'use strict';
  16.     var scroller = document.createElement("img");
  17.     scroller.src = "https://puu.sh/xluRH/c8dd354a59.png";
  18.     scroller.id = "scroller";
  19.     scroller.style.opacity = 0.3;
  20.     scroller.style.position = "fixed";
  21.     scroller.style.zIndex = 99;
  22.     scroller.style.cursor = "pointer";
  23.     scroller.style.bottom = "30px";
  24.     scroller.style.right = "20px";
  25.     scroller.height = 100;
  26.     scroller.width = 100;
  27.     
  28.     function defineOnClickEvent(){
  29.         $(scroller).click(function() {
  30.             $("html, body").animate({ scrollTop: 0 }, "slow");
  31.             return false;
  32.         });
  33.     }
  34.     
  35.     function defineOnScrollEvent(){
  36.         $(document).scroll(function() {
  37.             if($(window).scrollTop() === 0) {
  38.                 $("#scroller").css("opacity", 0.3);
  39.             }
  40.             else
  41.                 $("#scroller").css("opacity", 1);
  42.         });
  43.     }
  44.     defineOnScrollEvent();
  45.     defineOnClickEvent();
  46.     
  47.     document.getElementsByTagName("body")[0].appendChild(scroller);
  48. })();