Element: prepend() method

prepend(param1)
prepend(param1, param2)
prepend(param1, param2, /* …, */ paramN)

let div = document.createElement("div");
let p = document.createElement("p");
let span = document.createElement("span");
div.append(p);
div.prepend(span);
console.log(div.childNodes); // NodeList [ <span>, <p> ]

let div = document.createElement("div");
div.append("Some text");
div.prepend("Headline: ");
console.log(div.textContent); // "Headline: Some text"

let div = document.createElement("div");
let p = document.createElement("p");
div.prepend("Some text", p);
console.log(div.childNodes); // NodeList [ #text "Some text", <p> ]

let div = document.createElement("div");
with (div) {
  prepend("foo");
}
// ReferenceError: prepend is not defined