[Helper]控制台查找标题与副标题

http://book.mixu.net/distsys/

function funcGetTextArr(elemList) {
  const textList = [];
  for (let i = 0, len = elemList.length; i < len; i++) {
    textList.push(elemList[i].innerText);
  }
  return textList;
}
function funcConsoleText(textList) {
  console.log(textList.join("\n"));
  console.log("\n");
}
function funcGetText() {
  console.log("\n");
  const h2List = document.querySelectorAll("h2");
  const h2Arr = funcGetTextArr(h2List);
  funcConsoleText(h2Arr);
  const h3List = document.querySelectorAll("h3");
  const h3Arr = funcGetTextArr(h3List);
  funcConsoleText(h3Arr);
}
funcGetText();