text: let active1 = "headBox nav-link active";
  let hidden1 = "headBox nav-link";
  let active2 = "divBox tab-pane fade show active";
  let hidden2 = "divBox tab-pane fade";
  
  let mpb = document.getElementById("mybatis-plus-button");
  let mb = document.getElementById("mybatis-button");
  
  let mp = document.getElementById("mybatis-plus");
  let m = document.getElementById("mybatis");
  
  function showTag(obj) {
      if (obj === mpb) {
          showMbp();
          return;
      }
      showMb();
  }
  
  function showMbp() {
      mpb.className = active1;
      mb.className = hidden1;
  
      mp.className = active2;
      m.className = hidden2;
  }
  
  function showMb() {
      mpb.className = hidden1;
      mb.className = active1;
  
      mp.className = hidden2;
      m.className = active2;
  }