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WaitForKeyElement

Waits for an element using the MutationObserver API

Ce script ne devrait pas être installé directement. C'est une librairie créée pour d'autres scripts. Elle doit être inclus avec la commande // @require https://updategreasyfork.deno.dev/scripts/523012/1519437/WaitForKeyElement.js 

// ==UserScript==
// @name         WaitForKeyElement
// @namespace    Violentmonkey Scripts
// @version      1.1
// @description  Waits for an element using the MutationObserver API
// @author       PaywallDespiser
// @grant        none
// ==/UserScript==

/**
 * Waits for a element of a given selector.
 *
 * @param {string} selector
 * @param {Element} [target=document.body]
 * @returns {Promise<Element>}
 */
function waitForKeyElement(selector, target = document.body) {
    return new Promise((resolve) => {
        {
            const element = target.querySelector(selector);
            if (element) {
                return resolve(element);
            }
        }

        const observer = new MutationObserver((mutations) => {
            for (const mutation of mutations) {
                for (const node of mutation.addedNodes) {
                    if (!(node instanceof HTMLElement)) continue;

                    if (node.matches(selector)) {
                        observer.disconnect();
                        resolve(node);
                        return;
                    }
                    const childElement = node.querySelector(selector);
                    if (childElement) {
                        observer.disconnect();
                        resolve(childElement);
                        return;
                    }
                }
            }
        });

        observer.observe(target, {
            childList: true,
            subtree: true,
            attributes: false,
            characterData: false,
        });
    });
}