我在我的网站上使用这段代码来实现下拉菜单:
<script>
var menu=function(){
var t=15,z=50,s=6,a;
function dd(n){this.n=n; this.h=[]; this.c=[]}
dd.prototype.init=function(p,c){
a=c; var w=document.getElementById(p), s=w.getElementsByTagName('ul'), l=s.length, i=0;
for(i;i<l;i++){
var h=s[i].parentNode; this.h[i]=h; this.c[i]=s[i];
h.onmouseover=new Function(this.n+'.st('+i+',true)');
h.onmouseout=new Function(this.n+'.st('+i+')');
}
}
dd.prototype.st=function(x,f){
var c=this.c[x], h=this.h[x], p=h.getElementsByTagName('a')[0];
clearInterval(c.t); c.style.overflow='hidden';
if(f){
p.className+=' '+a;
if(!c.mh){c.style.display='block'; c.style.height=''; c.mh=c.offsetHeight; c.style.height=0}
if(c.mh==c.offsetHeight){c.style.overflow='visible'}
else{c.style.zIndex=z; z++; c.t=setInterval(function(){sl(c,1)},t)}
}else{p.className=p.className.replace(a,''); c.t=setInterval(function(){sl(c,-1)},t)}
}
function sl(c,f){
var h=c.offsetHeight;
if((h<=0&&f!=1)||(h>=c.mh&&f==1)){
if(f==1){c.style.filter=''; c.style.opacity=1; c.style.overflow='visible'}
clearInterval(c.t); return
}
var d=(f==1)?Math.ceil((c.mh-h)/s):Math.ceil(h/s), o=h/c.mh;
c.style.opacity=o; c.style.filter='alpha(opacity='+(o*100)+')';
c.style.height=h+(d*f)+'px'
}
return{dd:dd}
}();
</script>
和
<div style="margin-left:150px">
<ul class="menu" id="menu">
<li><a href="#" class="menulink">Dropdown One</a>
<ul>
<li><a href="#">Navigation Item 1</a></li>
<li>
<a href="#" class="sub">Navigation Item 2</a>
<ul>
<li class="topline"><a href="#">Navigation Item 1</a></li>
<li><a href="#">Navigation Item 2</a></li>
<li><a href="#">Navigation Item 3</a></li>
<li><a href="#">Navigation Item 4</a></li>
<li><a href="#">Navigation Item 5</a></li>
</ul>
</li>
<li>
<a href="#" class="sub">Navigation Item 3</a>
<ul>
<li class="topline"><a href="#">Navigation Item 1</a></li>
<li><a href="#">Navigation Item 2</a></li>
<li>
<a href="#" class="sub">Navigation Item 3</a>
<ul>
<li class="topline"><a href="#">Navigation Item 1</a></li>
<li><a href="#">Navigation Item 2</a></li>
<li><a href="#">Navigation Item 3</a></li>
<li><a href="#">Navigation Item 4</a></li>
<li><a href="#">Navigation Item 5</a></li>
<li><a href="#">Navigation Item 6</a></li>
</ul>
</li>
<li><a href="#">Navigation Item 4</a></li>
</ul>
</li>
<li><a href="#">Navigation Item 4</a></li>
<li><a href="#">Navigation Item 5</a></li>
</ul>
</li>
</ul>
</div>
<script type="text/javascript">
var menu=new menu.dd("menu");
menu.init("menu","menuhover");
</script>
我试图在h.onclick中转换h.onmouseover和h.onmouseout,因为我想在用户点击菜单时展开菜单。
我该怎么做?我是Javascript中的新手。
答案 0 :(得分:0)
试试这个:
从
改变h.onmouseover=new Function(this.n+'.st('+i+',true)');
h.onmouseout=new Function(this.n+'.st('+i+')');
更改为
h.onclick=new Function(this.n+'.st('+i+',true)');