Js查找元素技巧

使用 xpath 查找:

function getElementByXpath(path) {
  return document.evaluate(
    path,
    document,
    null,
    XPathResult.FIRST_ORDERED_NODE_TYPE,
    null
  ).singleNodeValue;
}

console.log(getElementByXpath("//html[1]/body[1]/div[1]"));