Automatically update your signature!
// ==UserScript==
// @name MAL Signature Updater
// @namespace SignatureUpdater
// @version 1
// @description Automatically update your signature!
// @author hacker09
// @match https://myanimelist.net/forum/?topicid=*
// @icon https://t3.gstatic.com/faviconV2?client=SOCIAL&type=FAVICON&fallback_opts=TYPE,SIZE,URL&url=http://myanimelist.net&size=64
// @run-at document-end
// @grant none
// ==/UserScript==
(function() {
'use strict';
document.querySelectorAll(".mal-post-toolbar > div").forEach(function(el, i) { //ForEach topic
if (document.querySelectorAll(".username")[i].innerText === document.querySelector("a.header-profile-link").innerText) { //If it is the script user topic
el.insertAdjacentHTML('afterbegin', `<button class="mal-btn secondary small outline noborder js-topic-message-report">Update Signature<i class="fa-solid fa-circle-exclamation fa-fw mr4" style=" display: none;"></i></button>`); //Add the update button on the page
el.querySelector(`button`).onclick = async function(e) //When the update btn is clicked
{ //Starts the function
fetch("https://myanimelist.net/editprofile.php?go=forumoptions") //Get current signature
.then(async response => { //After getting current signature
const html = await response.text(); // Gets the fetch response
const newDocument = new DOMParser().parseFromString(html, 'text/html'); // Parses the fetch response
if (newDocument.querySelector("#sigbox").value.match('malsignature.com') !== null) //If the malsignature.com link exists on the signature
{ //Starts the if condition
fetch("https://myanimelist.net/editprofile.php?go=forumoptions", {
"headers": {
"content-type": "application/x-www-form-urlencoded",
},
"body": `signature=${encodeURIComponent(newDocument.querySelector("#sigbox").value.match(/.*style=(\d+)/) !== null ? newDocument.querySelector("#sigbox").value.replace(newDocument.querySelector("#sigbox").value.match(/.*style=(\d+)/)[1], parseInt(newDocument.querySelector("#sigbox").value.match(/.*style=(\d+)/)[1])+1) : newDocument.querySelector("#sigbox").value.match(/username=[^&\[]*/) !== null ? newDocument.querySelector("#sigbox").value.replace(newDocument.querySelector("#sigbox").value.match(/username=[^&\[]*/)[0], newDocument.querySelector("#sigbox").value.match(/username=[^&\[]*/)[0] + '&style=1') : '')}&subsig=Submit&csrf_token=${document.querySelector("[name='csrf_token']").content}`,
"method": "POST"
}); //Finishes the if fetch
} //Finishes the if condition
}); //Finishes the then function
}; //Finishes the function
} //Finishes the if condition
}); //Finishes the forEach loop
})();