https://www.tokyoweekender.com/wp-content/themes/tw2023/assets/js/video/youtube-resize.js?ver=6.6.2

1var resizingTimer = "";
2var videoHidden = true;
3
4function setYoutubeResize() {
5    var allVideos = $("iframe[src*='//www.youtube']");
6    
7    allVideos.each(function () {
8        $(this)
9                .attr('data-aspect-ratio', this.height / this.width)
10                .attr('data-former-height', this.height)
11                .attr('data-former-width', this.width);
12    });
13
14    $(window).resize(function () {
15        clearTimeout(resizingTimer);
16        resizingTimer = setTimeout(resizeYoutubeIframes, 200);
17    });
18
19    $(document).on('webkitfullscreenchange mozfullscreenchange fullscreenchange', function (e) {
20        allVideos.width("").height("");
21    });
22
23    function resizeYoutubeIframes() {
24
25        allVideos.each(function () {
26            var videoElement = $(this);
27            var videoContainer = videoElement.parent();
28
29            if (videoContainer.width() !== videoElement.width())
30            {
31                videoElement
32                        .attr("width", videoContainer.width())
33                        .attr("height", videoContainer.width() * videoElement.data('aspect-ratio'));
34            }
35        });
36        showVideosIfHidden();
37    }
38
39    function showVideosIfHidden() {
40        if (videoHidden == true) {
41            allVideos.parent().addClass("loaded");
42            videoHidden = false;
43        }
44    }
45
46    resizeYoutubeIframes();
47}
48
49document.addEventListener("DOMContentLoaded", function () {
50    setYoutubeResize();
51});