使用jquery在hover / mouseout上显示/隐藏下拉菜单

so i have a simple navbar with a dropdown menu for when a user hovers on the more tab. i want to hide the dropdown menu when the user mouses out of the categories div.

所以我有一个简单的导航栏,下拉菜单用于当用户在更多选项卡上悬停时。我想隐藏下拉菜单当用户将鼠标移出类别div时。

problem is that when the user mouses into a ul li, the dropdown closes. how can i set it so that the function ignores the ul li within the categories div. tried categories > * but didn't work.

问题是,当用户将鼠标移入ul li时,下拉菜单将关闭。我如何设置它,以便该函数忽略类别div中的ul li。尝试过类别> *但没有用。

<div id="navbar">
  <ul>
    <li>tab1</li>
    <li>tab2</li>
    <li id="moretab">more</li>
  </ul>
</div> 
<div id="categories">
  <ul>
    <li>cats</li>
    <li>dogs</li>
  </ul>
</div>

$("#moretab").hover(function(){
  $("#categories").css("visibility","visible"); 
});
$("#categories").mouseout(function() {
    $("#categories").css("visibility","hidden"); 
});

5 个解决方案

#1

The easiest answer is how you would do it without jQuery: put the dropdown in the triggering element (e.g. dropdown list in a list item in the navigation list).

最简单的答案是如何在没有jQuery的情况下执行此操作:将下拉列表放在触发元素中(例如导航列表中列表项中的下拉列表)。

If you want something less straightforward, mouseleave might help.

如果你想要一些不太直接的东西,mouseleave可能会有所帮助。

#2

$(document).ready(function () {

  $("#moretab").mouseenter(function(){
    $("#categories").show(); 
  });

  $("#categories, #moretab").mouseleave(function(){
    $("#categories").hide(); 
  });
});

#3

Jquery hover plugin includes both mouseenter and mouseleave function and following code works fine for me.

Jquery悬停插件包括mouseenter和mouseleave函数,以下代码对我来说很好。

javascript:

$(document).ready(function(){
    $('.dropdown').hover(
    function(){
        $(this).children('.sub-menu').slideDown('fast');
    },
    function () {
        $(this).children('.sub-menu').slideUp('fast');
    });
});

#4

This might help ! Hide the "sub_menu" first.

这可能有帮助!首先隐藏“sub_menu”。

//html

<ul>
 <li id = "menu"> <a  href ="#"> Settings </a>
   <ul id = "sub_menu">
   <li> <a  href ="#"> page 1</a></li>
   <li> <a  href ="#"> page 2</a></li>
   </ul>
 </li>
 <li>SomeLink</li>
 <li>SomeLink 2</li>
</ul>

//Javascript

        $("#menu").hover(function() {
            $("#sub_menu").show();
        }, function() {
            $("#sub_menu").hide();
        });

#5

Few things:

put the div inside of the "#moretab" so that mousing from the menu back to the "more" won't close it.

把div放在“#moretab”里面,这样从菜单回到“more”就不会关闭它。

add a delay from mouseleave, which is a preferable user experience

添加来自mouseleave的延迟,这是一种更好的用户体验

<div id="navbar">
    <ul>
        <li>tab1</li>
        <li>tab2</li>
        <li id="moretab">more
            <div id="categories">
                <ul>
                    <li>cats</li>
                    <li>dogs</li>
                </ul>
            </div>
        </li>
    </ul>
</div>

<script type="text/javascript">
$(document).ready(function(){

$("#moretab").hover(function(){
    $("#categories").slideDown("fast");
    clearTimeout(debounce);
});

$("#moretab").mouseleave (function() {
    debounce = setTimeout(closeMenu,400);
});

var debounce;
var closeMenu = function(){
    $("#categories").slideUp("fast");
    clearTimeout(debounce);
}

});
</script>

#1