这篇文章主要介绍了javascript实现树形菜单的方法,涉及javascript动态操作页面元素与节点属性的相关技巧,具有一定参考借鉴价值,需要的朋友可以参考下
本文实例讲述了javascript实现树形菜单的方法。分享给大家供大家参考。具体如下:
- var ME={
- ini:{i:true,d:{},d1:{},h:0,h1:0,h2:0},
- html:function(da,f){
- var s='<ul'+(f?' class="f"':'')+'>';
- for(var i=0,l=da.length;i<l;i++){
- if(typeof(da[i].pid)=='object'){
- s+='<li><button type="button" class="'+(i==0&&this.ini.i?'s1':(i+1==l?'s5':'s3'))+'" onclick="ME.yc(this)"></button><span><button type="button" class="r1"></button><a href="javascript:;">'+da[i].ming+'</a></span>';
- this.ini.i=false;
- s+=this.html(da[i].pid,(i+1==l));
- }else{
- s+='<li><button type="button" class="'+(i+1==l?'e3':'e1')+'"></button><span><button type="button" class="m1"></button><a href="http://www.vevb.com" target="mainFrame">'+da[i].ming+'</a></span>';
- }
- s+='</li>';
- }
- s+='</ul>';
- return s;
- },
- st:function(id,da){
- document.getElementById(id).innerHTML=this.html(da);
- },
- yc:function(a){
- var s=a.className.substr(1);
- if(s%2){
- this.ini.d=a.parentNode.children[2];
- this.ini.h1=this.hei(this.ini.d);
- this.ini.h3=this.ini.h1/10;
- this.yc1(1);
- a.className='s'+(parseInt(s)+1);
- a.parentNode.children[1].children[0].className='r2';
- var ol=a.parentNode.parentNode._;
- if(typeof(ol)=='object'){
- this.ini.d1=ol;
- this.ini.h=ol.offsetHeight;
- this.ini.h2=this.ini.h/10;
- this.yc2(1);
- ol.parentNode.children[0].className='s'+(parseInt(ol.parentNode.children[0].className.substr(1))-1);
- ol.parentNode.children[1].children[0].className='r1';
- }
- a.parentNode.parentNode._=a.parentNode.children[2];
- }else{
- this.ini.d1=a.parentNode.children[2];
- this.ini.h=this.ini.d1.offsetHeight;
- this.ini.h2=this.ini.h/10;
- this.yc2(1);
- a.className='s'+(parseInt(s)-1);
- a.parentNode.children[1].children[0].className='r1';
- a.parentNode.parentNode._='';
- }
- },
- yc1:function(b){
- var h1=ME.ini.h1-(11/(b+1)-1)*ME.ini.h3;
- with(ME.ini.d.style){
- height=h1+'px';
- display='block';
- }
- if(b<10){
- setTimeout('ME.yc1('+(b+1)+')',25);
- }else{
- ME.ini.d.style.display='block';
- ME.ini.d.style.height='';
- }
- },
- yc2:function(b){
- var h1=(11/(b+1)-1)*ME.ini.h2;
- with(ME.ini.d1.style){
- height=h1+'px';
- }
- if(b<10){
- setTimeout('ME.yc2('+(b+1)+')',25);
- }else{
- ME.ini.d1.style.display='';
- ME.ini.d1.style.height='';
- }
- },
- hei:function(a){
- var b=a.cloneNode(true);
- b.style.position='absolute';
- b.style.display='block';
- b.style.visibility='hidden';
- a.parentNode.appendChild(b);
- var h=b.offsetHeight;
- a.parentNode.removeChild(b);
- return h;
- }
- }
希望本文所述对大家的javascript程序设计有所帮助。
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