treehouse/static/js/thanks-webkit.js

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JavaScript
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2023-08-27 19:40:47 +02:00
// Detect if we can have crucial functionality (ie. custom elements call constructors).
// This doesn't seem to happen in Epiphany, and possibly also other Webkit-based browsers.
let works = false;
class WebkitMoment extends HTMLLIElement {
constructor() {
super();
works = true;
}
}
customElements.define("th-webkit-moment", WebkitMoment, { extends: "li" });
let willItWorkOrWillItNot = document.createElement("div");
willItWorkOrWillItNot.innerHTML = `<li is="th-webkit-moment"></li>`;
// If my takeoff fails
// tell my mother I'm sorry
let box = document.getElementById("webkit-makes-me-go-insane");
if (!works) {
box.style = "display: block";
}