Javascript menu level 2/4 with error

Question

Javascript menu level 2/4 with error

Asked 8 years, 6 months ago

Viewed 64 times

0

How do I define the same code, with different variables, but to perform the same action.

I tried to rewrite it and still, the Javascript is in error, in case it would be a dropdown menu, with up to 4 levels, I am still in 2° level it, that when clicking outside the menu, the same closes

If the user clicks off the menu, it will close

window.onclick = function(event) {
    if (!event.target.matches('.dropbtn')) {
        var dropdowns = document.getElementsByClassName("dropdown-content");
        var i;
        for (i=0; i < dropdowns.length; i++) {
            var openDropdown = dropdowns[i];
            if (openDropdown.classList.contains('show')) {
                openDropdown.classList.remove('show');
            }
        }
    }
}

When the user clicks on the button, toggle between hide and show content 'Dropdown'

/*Primários*/

    function funcaoPrincipais() {
        document.getElementById("myDropdown").classList.toggle("show");
    }

    /*Secundários*/
    function  funcaoPrincipaisPrincipal() {
        document.getElementById("myFirstSubForPrincipal").classList.toggle("show");
    }
    function  funcaoPrincipaisInstitucional() {
        document.getElementById("myFirstSubForInstitucional").classList.toggle("show");
    }

You can do a jsFiddle?

– Sergio

2016/05/17 at 15:28
https://jsfiddle.net/xakkbvn5/

– Murilo Melo

2016/05/17 at 16:37

1 answer

Browser other questions tagged javascript html css menu dropdown

You are not signed in. Login or sign up in order to post.

by MagicHat • **12,262** points · Answer 1 · 2016-05-20T18:03:22+00:00

See if this code helps you.

<head>
<style>
body {margin:25px; font:11px Verdana,Arial; background:#eee}
ul.menu {list-style:none; margin:0; padding:0}
ul.menu * {margin:0; padding:0}
ul.menu a {display:block; color:#000; text-decoration:none}
ul.menu li {position:relative; float:left; margin-right:2px}
ul.menu ul {position:absolute; top:26px; left:0; background:#d1d1d1; display:none; opacity:0; list-style:none}
ul.menu ul li {position:relative; border:1px solid #aaa; border-top:none; width:148px; margin:0}
ul.menu ul li a {display:block; padding:3px 7px 5px; background-color:#d1d1d1}
ul.menu ul li a:hover {background-color:#c5c5c5}
ul.menu ul ul {left:148px; top:-1px}
ul.menu .menulink {border:1px solid #aaa; padding:5px 7px 7px; font-weight:bold; width:134px}
ul.menu .sub {background:#d1d1d1; }
ul.menu .topline {border-top:1px solid #aaa}
</style>
<script type="text/javascript">
	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>
</head>
<body>
<ul class="menu" id="menu">
	<li><a href="#" class="menulink">Dropdown 1>></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>
	
<script type="text/javascript">
	var menu=new menu.dd("menu");
	menu.init("menu","menuhover");
</script>
</body>