document.addEventListener("DOMContentLoaded",
function() {
var div, n,
v = document.getElementsByClassName("youtube-player");
for (n = 0; n < v.length; n++) {
div = document.createElement("div");
div.setAttribute("data-id", v[n].dataset.id);
div.innerHTML = labnolThumb(v[n].dataset.id);
div.onclick = labnolIframe;
v[n].appendChild(div);
}
});
function labnolThumb(id) {
var thumb = '',
play = '
'; return thumb.replace("ID", id) + play; }
function labnolIframe() { var iframe = document.createElement("iframe"); var embed = "https://www.youtube.com/embed/ID?autoplay=1"; iframe.setAttribute("src", embed.replace("ID", this.dataset.id)); iframe.setAttribute("frameborder", "0"); iframe.setAttribute("allowfullscreen", "1"); this.parentNode.replaceChild(iframe, this); }