Find the specified element and execute subsequent code after finding it. This code is rewritten by BrockA's waitForKeyElements.js and uses the native js environment.
此脚本不应直接安装，它是一个供其他脚本使用的外部库。如果您需要使用该库，请在脚本元属性加入：// @require https://update.greasyfork.org/scripts/523085/1519645/waitForKeyElements3.js