滑动菜单是一种较常用的菜单形式,在罗列二级分类的场合下广泛使用。其特点是代码量极小,数据描述简洁。
本例使用无线表格,以类的书写方式表述。
本代码可自由扩散。
---><BR><style><BR>table {font-size = 9pt}<BR>td {height = 20px}<BR></style><BR><body><BR><span id="menus"></span><BR><span id="view"></span><BR></body><BR><BR><script for=pad event=onclick><BR>// 大类节点点击响应<BR>for(var i=1;i<this.parentElement.rows.length;i+=2)<BR>this.parentElement.rows[i].style.display = "none";<BR>this.parentElement.rows[this.rowIndex+1].style.display=′block′;<BR>view.innerHTML = this.v1 +":"+ this.v2; // 根据大小类自行构造相应动作<BR></script><BR><BR><script for=bar event=onclick><BR>// 小类节点点击响应<BR>view.innerHTML = this.v1 +":"+ this.v2; // 根据大小类自行构造相应动作<BR></script><BR><BR><script><BR>/**<BR>* 产生菜单的html代码串<BR>* 入口参数为菜单默认打开的大类号<BR>*/<BR>function menu(n) {<BR>this.ar = new Array(<BR>/**<BR>* 参数数组<BR>* 列1:大类<BR>* 列2:小类<BR>* 列3:标题<BR>*/<BR>new Array(1,0,"大类一"),<BR>new Array(1,1,"小类一"),<BR>new Array(1,2,"小类二"),<BR>new Array(2,0,"大类二"),<BR>new Array(2,1,"小类一"),<BR>new Array(2,2,"小类二"),<BR>new Array(2,3,"小类三"),<BR>new Array(3,0,"大类三"),<BR>new Array(3,1,"小类一"),<BR>new Array(3,2,"小类二"),<BR>new Array(4,0,"大类四"),<BR>new Array(4,1,"小类一"),<BR>new Array(4,2,"小类二"),<BR>new Array(4,3,"小类三")<BR>);<BR>this.width =120;<BR>this.bgcolor = "#f0f0f0";<BR>this.bordercolorlight = "#c0c0c0";<BR>this.bordercolordark = "#FFFFFF";<BR>this.tr_bgcolor = "#d0d0d0";<BR>var s = "<table border=1 align=center width="+this.width+" bgcolor="+this.bgcolor+" bordercolorlight="+this.bordercolorlight+" bordercolordark="+this.bordercolordark+" CELLPADDING=0 CELLSPACING=0>"<BR>for(var i=0;i<this.ar.length;i++) { // 构造菜单的html结构,其中将大小类编号作为自定义参数,以便事件响应时使用。<BR>if(this.ar[i][1] == 0) {<BR>if(i > 0)<BR>s += "</table></td></tr>";<BR>var vk = this.ar[i][0]==n?"block":"none";<BR>s += "<tr id=′pad′ bgcolor="+this.tr_bgcolor+" v1="+this.ar[i][0]+" v2="+this.ar[i][1]+"><td align=center>"+this.ar[i][2]+"</td></tr><tr style=′display:"+vk+"′><td><table width=100%>";<BR>}else<BR>s += "<tr><td id=′bar′ v1="+this.ar[i][0]+" v2="+this.ar[i][1]+">"+this.ar[i][2]+"</td></tr>";<BR>}<BR>s += "</table></td></tr></table>";<BR>return s;<BR>}<BR><BR>/*** 创建菜单 ***/<BR>menus.innerHTML = menu(4);<BR></script>