javascript - How to deal with mutli level drop down menu by touch devices -


i designed website using html , css. includes 3 levels of navigation menu , worked on desktop. problem occurs in touch devices (smartphone , tablet) sub menu isn't still shown when element of parent menu touched, because there no crosser hover on item.

how can solve problem?

here code menu:

<!doctype html>  <html>  <head>  <title>document</title>  <meta chrset="utf-8">  <meta name="author" content="ralph phillips">  <style>  * {margin:0px; padding:0px;}  body {font-family:verdana;background-color:#abc;}  h1{text-align:center;border-bottom:2px solid #009;margin-bottom:50px;}  ul#navmenu, ul.sub1, ul.sub2{list-style:none;font-size:9pt;}  ul#navmenu li{width:125px;text-align:center;position:relative;float:left;margin-right:4px;}  ul#navmenu a{text-decoration:none;display:block;width:125px;height:25px;line-height:25px;background-color:#fff;border:1px solid #ccc;border-radius:5px;}  ul#navmenu .sub1 li{}  ul#navmenu .sub1 a{margin-top:5px;}  ul#navmenu .sub2 a{margin-left:10px;}  ul#navmenu li:hover > a{background-color:#cfc;}  ul#navmenu li:hover a:hover{background-color:#ff0;}  ul#navmenu ul.sub1{display:none;position:absolute;top:26px;left:0px;}  ul#navmenu ul.sub2{display:none;position:absolute;top:0px;left:126px;}  ul#navmenu li:hover .sub1{display:block;}  ul#navmenu .sub1 li:hover .sub2{display:block;}  </style>  </head>  <body>    <h1>navigation menu</h1>    <ul id="navmenu">  	<li><a href="#">hyperlink1</a></li>  	<li><a href="#">hyperlink2</a>  		<ul class="sub1">  			<li><a href="#">hyperlink2.1</a></li>  			<li><a href="#">hyperlink2.2</a></li>  			<li><a href="#">hyperlink2.3</a></li>  		</ul>  	</li>  	<li><a href="#">hyperlink3</a></li>  	<li><a href="#">hyperlink4</a>  		<ul class="sub1">  			<li><a href="#">hyperlink4.1</a></li>  			<li><a href="#">hyperlink4.2</a></li>  			<li><a href="#">hyperlink4.3</a>  				<ul class="sub2">  					<li><a href="#">hyperlink4.3.1</a></li>  					<li><a href="#">hyperlink4.3.2</a></li>  					<li><a href="#">hyperlink4.3.3</a></li>  				</ul>  			</li>  		</ul>  	</li>  	<li><a href="#">hyperlink5</a></li>      </ul>      </body>  </html>

can't hover in touch devices.

for working in touch device, can use jquery click event this:

$("ul#navmenu li").click(function(){     $('.sub1').removeclass('display');     $(this).find('.sub1').addclass('display'); })

demo, complete code


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