Who Defriended ME!? - MAL

Now you can easily and quickly know who DeFriended you on MAL!
当前为 2021-02-21 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name         Who Defriended ME!? - MAL
// @namespace    MALDeFriendStalker
// @version      0.3
// @description  Now you can easily and quickly know who DeFriended you on MAL!
// @author       hacker09
// @include      https://myanimelist.net/profile/*/friends
// @include      https://myanimelist.net/myfriends.php?go=remove&id=*
// @icon         https://www.google.com/s2/favicons?domain=myanimelist.net
// @grant        GM_deleteValue
// @grant        GM_listValues
// @grant        GM_getValue
// @grant        GM_setValue
// @run-at       document-end
// ==/UserScript==
(function() {
  'use strict';
  var ScriptUserName = document.querySelector("a.header-profile-link").innerText; //Get the script user user name
  if (location.href.match('https://myanimelist.net/profile/' + ScriptUserName + '/friends')) //Make the script work only on the script user friend list
  { //Starts the if condition
    var PastFriends = []; //Creates a new global array
    var ActualFriendsArray = []; //Creates a new global array

    var WhoDeFriendedMEBTN = document.createElement("a"); //Creates a button element
    WhoDeFriendedMEBTN.innerHTML = "Check Who DeFriended ME!"; //Adds a text to the button
    document.querySelector("a.header-right.mt4.mr0").parentElement.appendChild(WhoDeFriendedMEBTN); //Add the button to the page
    WhoDeFriendedMEBTN.setAttribute("id", "WhoDeFriendedMEBTN"); //Set an id to the button
    WhoDeFriendedMEBTN.setAttribute("style", "cursor: pointer;margin-left: 15px;font-size: 10px;"); //Set the button css style
    document.querySelector("#WhoDeFriendedMEBTN").addEventListener("click", GetNewAndActualFriendsAndShowWhoDeFriendedME, false); //Add a click advent listener to the button

    for (var i = GM_listValues().length; i--;) { //For every single MAL friend saved on tampermonkey
      PastFriends.push(GM_listValues()[i]); //Add all Past MAL Friends saved on tampermonkey to an array
    } //Finishes the for condition

    var nextpagenum = 0; //Creates a new variable
    var increaseby = 1; //Creates a new variable
    async function GetNewAndActualFriendsAndShowWhoDeFriendedME() { //Creates an async function
      while (true) { //While the fetched page constains 100 friends
        nextpagenum += increaseby; //Increase the page number
        const url = 'https://api.jikan.moe/v3/user/' + ScriptUserName + '/friends/' + nextpagenum; //Creates a variable to fetch the friend list and the next pages
        var JsonResponse = await (await fetch(url)).json(); //Fetches the friend list and the next pages and converts the fetched pages to json

        for (var i = JsonResponse.friends.length; i--;) { //For every single MAL friend
          GM_setValue(JsonResponse.friends[i].username, 'Actual MAL Friend'); //Get and save the actual mal friend and store the username
          ActualFriendsArray.push(JsonResponse.friends[i].username); //Add all Actual MAL Friends to an array
        } //Finishes the for condition

        if (JsonResponse.friends.length !== 100) { //If the fetched page doesn't have 100 friends on it
          var WhoDefriendedME = PastFriends.filter(d => !ActualFriendsArray.includes(d)); //Creates a variable to get the Past Friend User Names that tampermonkey has and check which Past Friends User Names are currently Missing
          if (WhoDefriendedME.length > 0) //If someone defriended you
          { //Starts the if condition
            alert('You was DeFriended by:\n' + WhoDefriendedME); //Shows who DeFriended you!
            for (var i = WhoDefriendedME.length; i--;) { //For every single MAL friend that defriended you and is saved on tampermonkey
              GM_deleteValue(WhoDefriendedME[i]); //Remove the defriended user name of the script storage
            } //Finishes the for condition
          } //Finishes the if condition
          else //If nobody defriended you
          { //Starts the else condition
            alert('Your current Friends list was updated and saved!\n Nobody Have DeFriended you!'); //Get the Past Friend User Names that tampermonkey has and check which Past Friends User Names are Missing and shows who DeFriended you!
          } //Finishes the else condition
          return;
        } //Finishes the if condition
        await new Promise(resolve => setTimeout(resolve, 600)); //Timeout to start the next fetch request
      } //Finishes the while condition
    } //Finishes the async function

  } //Finishes the if condition
  else //If the user is defriending a friend on the page https://myanimelist.net/myfriends.php?go=remove&id=
  { //Starts the else condition
    document.querySelector("input.inputButton").onclick = function() { //Detects the mouse click on the 'Remove Friend' button
      GM_deleteValue(document.querySelector("td.dialog-text > strong").innerText); //Remove the defriended user name of the script storage
    }; //Finishes the onclick advent listener
  } //Finishes the else condition
})();
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