<div id="menu">
            <ul>
                <li>复制</li>
                <li>粘贴</li>
                <li>运行</li>
                <li>工具</li>
                <li>帮助</li>
            </ul>
        </div>
        <script type="text/javascript">
            var menu = document.getElementById("menu");
            document.oncontextmenu = function (ev) {
                var oEvent = ev || event;
                //自定义的菜单显示
                menu.style.display = "block";
                //让自定义菜单随鼠标的箭头位置移动
                menu.style.left = oEvent.clientX + "px";
                menu.style.top = oEvent.clientY + "px";
                //return false阻止系统自带的菜单,
                //return false必须写在最后,否则自定义的右键菜单也不会出现
                return false;

            }
            //实现点击document,自定义菜单消失
            document.onclick = function () {

                menu.style.display = "none";
            }
        </script>


本文转载:CSDN博客