JavaScript isDOM - 如何检查JavaScript对象是否是DOM对象？

function isDOM(obj) {
  return (
    obj &&
    (typeof HTMLElement === "object"
      ? obj instanceof HTMLElement
      : obj &&
        typeof obj === "object" &&
        obj.nodeType === 1 &&
        typeof obj.nodeName === "string")
  );
}

const div = document.createElement("div");
console.log(isDOM(div)); // 输出：true

const obj = {
  nodeType: 1,
  nodeName: "div",
};
console.log(isDOM(obj)); // 输出：true

const notDOM = "this is not a DOM object";
console.log(isDOM(notDOM)); // 输出：false

const div = document.createElement("div");
console.log(div instanceof HTMLDivElement); // 输出：true

const input = document.createElement("input");
console.log(input instanceof HTMLInputElement); // 输出：true