JS Three-level collapsible menu implementation Method _javascript skills

This article describes the JS three-level collapsible menu implementation method. Share to everyone for your reference, specific as follows:

. ASPX code:

<%@ Page language= "C #" autoeventwireup= "true" codefile= "NavigateMenu.aspx.cs" inherits= "Navigatemenu"%> <! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd
  ">  

JS File code:

function Domenu (obj,strdeep) {
 var items=obj.parentnode.getelementsbytagname ("ul");
 Get a object with all the UL sets contained in your node Li
 var itmul;
 var deeps=strdeep; Strdeep is the series
 if (items.length>0) {
 itmul=items[0] of the current menu;
 alert (Itmul);
 }
 if (itmul.classname!= "ex") {
 cxall ()//When the current node is off, perform the shutdown All UL submenu
 if (deeps== ' 2 ') {//To expand the Level three menu, expand its level two parent menu
 itmul.parentnode.parentnode.classname= "ex";
 }
 Itmul.classname= "Ex"; Expand Downlevel Menu
 }else{
 itmul.classname= "CX";
 }
function Statup () {
 cxall ();
 var Uldom=document.getelementbyid ("Nav");
 var items=uldom.getelementsbytagname ("ul");
}
function Cxall () {
 var Uldom=document.getelementbyid ("Nav");
 var items=uldom.getelementsbytagname ("ul");
 for (Var i=0;i<items.length;i++)
 {
 items[i].classname= "CX";
 }
}

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I hope this article will help you with your JavaScript programming.