☰

Amazon CPU Tamer

减少Amazon购物页面上的CPU利用率。顺利地享受买东西吧。

当前为 2020-11-17 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name        Amazon CPU Tamer
  3. // @name:ja     Amazon CPU Tamer
  4. // @name:zh-CN  Amazon CPU Tamer
  5. // @namespace   knoa.jp
  6. // @contributionURL https://paypal.me/kantankikaku
  7. // @description It reduces CPU usage on Amazon shopping pages. Enjoy your snappy shopping.
  8. // @description:ja AmazonのショッピングページでのCPU使用率を削減します。お買いものをサクサク楽しみましょう。
  9. // @description:zh-CN 减少Amazon购物页面上的CPU利用率。顺利地享受买东西吧。
  10. // @include     https://www.amazon.com/*
  11. // @include     https://www.amazon.co.jp/*
  12. // @include     https://www.amazon.*
  13. // @exclude     */cart/*
  14. // @exclude     */buy/*
  15. // @version     1.2.3
  16. // @grant       none
  17. // @run-at      document-start
  18. // ==/UserScript==
  19.  
  20. /*
  21. [update] 1.2.3
  22. Add a UK associate ID.
  23.  
  24. */
  25. (function(){
  26.   const SCRIPTNAME = 'Amazon Cpu Tamer';
  27.   console.log(SCRIPTNAME);
  28.   const TAMEDINTERVAL = 60*1000;/* a bunch of intervals does cost so much even if the processes do nothing */
  29.   const QUICKRESPONSE =  1*1000;/* some of the interactions need rather quick response such as video guides */
  30.   /* tame quick intervals */
  31.   window.originalSetInterval = window.setInterval;
  32.   window.setInterval = function(f, interval, ...args){
  33.     if(interval < TAMEDINTERVAL){
  34.       console.log(SCRIPTNAME, 'interval:', interval, 'to', TAMEDINTERVAL);
  35.       interval = TAMEDINTERVAL;
  36.       window.setTimeout(f, QUICKRESPONSE, ...args);
  37.     }
  38.     return window.originalSetInterval(f, interval, ...args);
  39.   };
  40.   /* add an associate tag */
  41.   switch(location.host){
  42.     case('www.amazon.com'):
  43.       addTag('knoa-20');
  44.       break;
  45.     case('www.amazon.co.uk'):
  46.       addTag('knoa-21');
  47.       break;
  48.     case('www.amazon.co.jp'):
  49.       addTag('knoa-22');
  50.       break;
  51.   }
  52.   function addTag(tag){
  53.     const url = new URL(location.href);
  54.     if(url.searchParams.get('tag') !== null) return;/* do not overwrite */
  55.     console.log(SCRIPTNAME, 'associate tag:', tag);
  56.     document.documentElement.addEventListener('mousedown', function(e){
  57.       for(let target = e.target; target; target = target.parentNode){
  58.         if(target.href && target.href.startsWith(location.origin)){
  59.           const separator = (target.href.includes('?')) ? '&' : '?';
  60.           target.href = target.href + separator + 'tag=' + tag;
  61.         }
  62.       }
  63.     });
  64.     const separator = (url.search === '') ? '?' : '&';
  65.     history.replaceState(null, document.title, location.href + separator + 'tag=' + tag);
  66.   }
  67. })();