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侦听网页节点变化

侦听节点变化

This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greasyfork.org/scripts/479253/1276618/%E4%BE%A6%E5%90%AC%E7%BD%91%E9%A1%B5%E8%8A%82%E7%82%B9%E5%8F%98%E5%8C%96.js 

// ==UserScript==
// @name         侦听网页节点变化
// @namespace    https://leochan.me
// @version      1.0.0
// @description  侦听节点变化
// @author       Leo
// @match        *://*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=leochan.me
// @homepage     https://leochan.me
// @licesen      GPLv2
// @grant        none
// ==/UserScript==
 
function leoChanWatchTargetElement(selector, cb){
    const targetElement = document.querySelector(selector);
    if(!targetElement){
        return;
    }
    const config = { attributes: true, childList: true, subtree: true };
    const observer = new MutationObserver(cb);
    observer.observe(targetElement, config);
    return observer;
}