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Next Spaceflight Countdown

Adds a countdown timer to upcoming space launches on NextSpaceflight.com

当前为 2025-02-26 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Next Spaceflight Countdown
  3. // @version      1.1
  4. // @description  Adds a countdown timer to upcoming space launches on NextSpaceflight.com
  5. // @match        https://nextspaceflight.com/*
  6. // @grant        none
  7. // @namespace https://greasyfork.org/users/1435046
  8. // ==/UserScript==
  9.  
  10. (function() {
  11.     'use strict';
  12.  
  13.     function updateCountdowns() {
  14.         document.querySelectorAll('.mdl-card').forEach(card => {
  15.             const timeElement = card.querySelector('.mdl-card__supporting-text span[id^="localized"]');
  16.             if (!timeElement) return;
  17.  
  18.             const launchTime = new Date(timeElement.textContent.trim());
  19.             if (isNaN(launchTime)) return;
  20.  
  21.             const tagsContainer = card.querySelector('.csscolumns');
  22.             if (tagsContainer) {
  23.                 let countdownTag = tagsContainer.querySelector('.countdown-tag');
  24.                 if (!countdownTag) {
  25.                     countdownTag = document.createElement('div');
  26.                     countdownTag.className = 'countdown-tag';
  27.                     countdownTag.style.marginTop = '5px';
  28.                     countdownTag.style.color = 'rgb(209, 205, 199)';
  29.                     tagsContainer.appendChild(countdownTag);
  30.                 }
  31.  
  32.                 const now = new Date();
  33.                 let diff = launchTime - now;
  34.                 const prefix = diff < 0 ? 'T+' : 'T-';
  35.                 diff = Math.abs(diff);
  36.                 
  37.                 const days = Math.floor(diff / (1000 * 60 * 60 * 24));
  38.                 const hours = Math.floor((diff % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
  39.                 const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60));
  40.                 const seconds = Math.floor((diff % (1000 * 60)) / 1000);
  41.                 
  42.                 countdownTag.textContent = `${prefix}${days}d ${hours}h ${minutes}m ${seconds}s`;
  43.             }
  44.         });
  45.  
  46.         setTimeout(updateCountdowns, 1000 - new Date().getMilliseconds());
  47.     }
  48.  
  49.     updateCountdowns();
  50. })();