重複加載js包 解決方法

  <script type="text/javascript">
    window.jQuery || document.write("<script src='./../static/libs/jquery/jquery-3.2.1.min.js?ver=1.1'>" + "<" + "/script>");
  </script>

如果不存在就加載document.write("<script src='./../static/libs/jquery/jquery-3.2.1.min.js?ver=1.1'>" + "<" + "/script>");