fix youtube caption position

fix youtube caption position through changing the margin of the caption's bottom.

Ekde 2022/03/24. Vidu La ĝisdata versio.

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// ==UserScript==
// @name         fix youtube caption position
// @namespace    http://tampermonkey.net/
// @version      0.2
// @description  fix youtube caption position through changing the margin of the caption's bottom.
// @author       You
// @match        *://*.youtube.com/watch?*
// @grant        none
 // @license MIT
// ==/UserScript==
 
(function() {
    'use strict';
 
    // Your code here...
    const captionMarginBottom="1px";
    const targetNode = document.querySelector(".ytp-larger-tap-buttons .ytp-caption-window-container");
    const config = {childList: true};
    function mutated(mutationList){
        for(const mutation of mutationList){
            console.log("Mutation~");
            if(mutation.type==="childList"){
                if (mutation.addedNodes.length===1){
                    console.log("caption appear~");
                    let caption = document.querySelector(".ytp-larger-tap-buttons .caption-window.ytp-caption-window-bottom");
                    caption.style.marginBottom = captionMarginBottom;
                }
            }
        }
    }
    const observer = new MutationObserver(mutated);
    observer.observe(targetNode, config);
})();