A tiny script that facilitates interactions with the LeetCode website. It adds one button on the top-left to easily copy the problem ID and problem URL. Because copying the ID from the URL bar is a pain in the neck.

	// ==UserScript==
	// @name LeetCode Helper
	// @namespace http://tampermonkey.net/
	// @version 0.1
	// @description Facilitate interactions with the LeetCode website. It adds one button on the top-left to easily copy the problem ID and problem URL.
	// @author Rafael Rendon Pablo
	// @match https://leetcode.com/problems/*/*
	// @icon https://www.google.com/s2/favicons?sz=64&domain=leetcode.com
	// @run-at document-idle
	// @grant none
	// ==/UserScript==
	// Location: https://gist.github.com/rendon/e12f0fadd879af98482eeb3723b54748
	(function() {
	'use strict';
	setTimeout(function() {
	const buttonStyle = 'margin: 2px; padding: 3px 3px; border: solid var(--gray-60) 3px; border-radius: 3px;';
	console.log("LeetCode Helper");
	const navBar = getNavBar();
	if (navBar == null) {
	console.log("Did not find nav bar");
	return;
	}
	console.log("Found nav bar");
	const copyURLButton = document.createElement('button');
	copyURLButton.append("URL/ID");
	copyURLButton.setAttribute('style', buttonStyle);
	copyURLButton.addEventListener("click", function() {
	const problemId = getProblemId();
	const url = 'https://leetcode.com/problems/' + problemId + '/';
	navigator.clipboard.write([
	new ClipboardItem({
	'text/plain': new Blob([problemId],
	{type: 'text/plain'}
	),
	'text/html': new Blob(
	['<a href="' + url + '">' + problemId + '</a>'],
	{type: 'text/html'},
	),
	}),
	]).then(() => {
	console.log("Copied URL to the clipboard: " + url);
	}).catch((err) => {
	console.error("Failed to copy URL to the clipboard: " + err);
	});
	});
	navBar.prepend(copyURLButton);
	}, 3000);
	function getNavBar() {
	const rootItemResults = document.getElementsByClassName('flex items-center');
	if (rootItemResults == null || rootItemResults.length === 0) {
	return null;
	}
	console.log("Found element");
	return rootItemResults[0];
	}
	function getProblemId() {
	return window.location.href.toString()
	.replace('https://leetcode.com/problems/', '')
	.replace(/\/.*/, '');
	}
	})();

view raw LeetCodeHelper.js hosted with by GitHub