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LeetCode Contest: Open All Problems

Add an "Open All Problems" button on the LeetCode Contest page. Note that Pop-up windows need to be allowed in the web browser.

  1. // ==UserScript==
  2. // @name        LeetCode Contest: Open All Problems
  3. // @namespace   JohnZhu04
  4. // @match       https://leetcode.com/contest/*-contest-*/
  5. // @grant       none
  6. // @version     1.1
  7. // @author      JohnZhu04
  8. // @license     MIT
  9. // @supportURL  https://github.com/JohnZhu04/LeetScript/issues
  10. // @icon        https://www.google.com/s2/favicons?sz=64&domain=leetcode.com
  11. // @exclude     https://leetcode.com/contest/*/problems/*/
  12. // @description Add an "Open All Problems" button on the LeetCode Contest page. Note that Pop-up windows need to be allowed in the web browser.
  13. // ==/UserScript==
  14.  
  15. const openAllProblems = () => {
  16.   const problemsClass = "ul.contest-question-list li a";
  17.   const problems = document.querySelectorAll(problemsClass);
  18.   // console.log(problems.length);
  19.   problems.forEach((problem) => {
  20.     window.open(problem.href);
  21.   });
  22. };
  23.  
  24. const main = () => {
  25.   const whichClass = ".col-md-6";
  26.   const buttonClass = "btn btn-default panel-hover";
  27.   const buttonText = "Open All Problems";
  28.   if (document.querySelector(whichClass) === null) {
  29.     // wait for the page to load
  30.     window.setTimeout(main, 2000);
  31.   }
  32.   const button = document.createElement("button");
  33.   button.innerText = buttonText;
  34.   button.addEventListener("click", openAllProblems);
  35.   button.className = buttonClass;
  36.   document.querySelector(whichClass).appendChild(button);
  37. };
  38.  
  39. main();