个回答

• jinzz

  2016-10-17 10:49:00

  已采纳

  <script type="text/javascript">
    function add(){
       var p1 = document.getElementById("p1");
               p1.className="one";
    }
    function modify(){
       var p2 = document.getElementById("p2");
       p2.className="two";
    }
  </script>

  0

• qq_嫉妒五级_03915342

  2016-10-17 14:51:44

  con.style.display = "none"

  0