const headerDom =
  '<div class="header">' +
  '<a href="/index.html">' +
  '<img class="logo left" src="/images/logo.png">' +
  "</a>" +
  '<div class="nav left">' +
  '<a href="/index.html">首页</a>' +
  '<a href="/rdCenter.html">研发中心</a>' +
  '<a href="/ecology.html">产业生态</a>' +
  '<a href="/solution.html">科技成果</a>' +
  '<a href="/party.html">党建引领</a>' +
  '<a href="/abouts.html">关于我们</a>' +
  "</div>" +
  "</div>";

$("header").append(headerDom);