jQuery dropdown menu with setTimeout does not work

问题

I know this questions being asked many times already but I can not make my drop down menu work with what I have so far. The problem appears if I set delay for menu to show, without setTimeout the menu works just fine. Could anyone take a look and suggest the solution please? I am also trying that it works in IE6.

Here is the full example with setTimeout: http://jsbin.com/owoyon/1/ (bugged, does not work correct, drop downs get stuck, delay is not recognized)
here is a working version without setTimeout http://jsbin.com/isamay/1/

and here is a code copy:

<!DOCTYPE html>
<html class="no-js">
<head>
<meta charset="utf-8">

<style>
    body {margin:60px; font-family: sans-serif; font-size:12px;}
    ul,ul ul {margin:0;padding:0;} 
    ul li {
        position:relative;
        list-style-type: none;
        padding:5px 0;
        margin:0 10px;
        cursor:pointer;
        border-bottom:1px solid #ddd;
        display:inline-block;
        float:left;     
    }
    .submenu {
        background:#eee;
        display:none;
        position:absolute;
        width:200px;        
        top:25px;
        left:0;
        margin-left:-5px;
    }
    .hover {
        display:block !important;
    }
</style>
</head>
<body>

<nav id="navigation">
<ul>
    <li class="drop">Option 1
        <div class="submenu">
            <ul>
                <li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
                <li>Aliquam tincidunt mauris eu risus.</li>
                <li>Vestibulum auctor dapibus neque.</li>
                <li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
            </ul>          
        </div>
    </li>
    <li class="drop">Option 2
    <div class="submenu">
            <ul>
                <li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
                <li>Aliquam tincidunt mauris eu risus.</li>
                <li>Vestibulum auctor dapibus neque.</li>
                <li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
            </ul>          
        </div>
    </li>
</ul>
</nav>

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>

<script>

$(document).ready(function(){

    (function(){

        var topNav = $('#navigation'),
            drop = topNav.find('.drop'),
            myTimer;                

        drop.hover(function(){                  
            obj = $(this);                      
            subMenu = obj.find('.submenu');         
            subMenu.addClass('hover');  
            clearTimeout(myTimer);              
        },function(){
            myTimer = setTimeout(function(){                
                subMenu.removeClass('hover');   
            },300);                                             
        });     

    })();   

});



</script>

</body>
</html>

回答1:

I was able to work it out. Demo here http://jsbin.com/owoyon/3/edit

var topNav = $('#navigation'),
    drop = topNav.find('.drop'),
    myTimer;

drop.hover(function () {
    var obj = $(this);
    var subMenu = obj.find('.submenu');
    clearTimeout(myTimer);
    if (subMenu.hasClass('hover')) {
        //do nothing
    } else {
        drop.find('.submenu').removeClass('hover');
        subMenu.addClass('hover');
    }
}, function () {
    myTimer = setTimeout(function () {
        drop.find('.submenu').removeClass('hover');
    }, 300);
});

回答2:

I modified your JS code and try this

var topNav = $('#navigation'),
            drop = topNav.find('.drop'),
            myTimer, subMenu;                

$('#navigation .drop').each(function(){
    var obj = $(this);
    obj.hover(function(){

        subMenu = obj.find('.submenu');
        subMenu.addClass('hover');
    },function(){
            myTimer = setTimeout(function(){                
                obj.find('.submenu').removeClass('hover');    
            },300);                                                   
     });
})

DEMO: http://jsfiddle.net/bvhk2/1/

来源：https://stackoverflow.com/questions/13138951/jquery-dropdown-menu-with-settimeout-does-not-work

标签

javascript

jquery

drop-down-menu

settimeout