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.phpstudy.net\" 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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