// ==UserScript==
// @name 网页加载速度测试
// @author ChatGPT
// @version 3.0 
// @description 测试网页加载速度
// @match *://*/*
// @run-at document-start
// @grant none
// @namespace https://greasyfork.org/users/452911
// @downloadURL none
// ==/UserScript==

(function() {

  const startTime = performance.now();

  window.addEventListener('load', () => {

    const endTime = performance.now();

    const timeElapsed = endTime - startTime;

    GM_notification({
      title: '加载时间',
      text: `网页加载总计耗时 ${timeElapsed.toFixed(2)} 毫秒`  
    });

  });

})();