Question

求助，js怎样实现点击按钮隐藏/显示层

Answer 1

    <script>
        function ycit()
        {
            var zt = document.getElementById("hd").style.display;
            if (zt == "none")
                document.getElementById("hd").style.display = "block";
            else
                document.getElementById("hd").style.display = "none";
        }
    </script>
    <div id="hd">
    </div>
    <button type="button" onclick="ycit()">点击我</button>