jquery - 让悬停菜单在 IE9 中工作

Question

我需要一个悬停菜单才能在 IE9 中工作。它适用于 IE 10 和 IE Edge。我不确定如何修复它。我认为它可能是 .subnav_wrapper_ul:first 在 JS 中，我不确定如何着手修复它。

我的 HTML

<div id="main-menu" class="collapse navbar-collapse mainMenu">
    <ul class="nav navbar-nav home-nav">
        <li class="nav_active"><a href="javascript:void(0);">HOME</a></li>
        <li class="nav_item">
            <a href="javascript:void(0);">ABOUT US </a>
                <ul class="subnav_wrapper_ul">
                    <li class="subnav_item">
                        <a href="javascript:void(0);"></a>
                        <a class="" href="http://www.profishinsea.co.uk/client_area/nicole/noor-tech/our-vision.html">Our Vision</a>
                    </li>
                    <li class="subnav_item">
                        <a href="javascript:void(0);"></a>
                        <a class="" href="http://www.profishinsea.co.uk/client_area/nicole/noor-tech/our-vision.html">Our Team</a>
                    </li>
                </ul>
        </li>
        <li class="nav_active"><a href="javascript:void(0);">CONTACT US</a></li>    
    </ul>
</div>

我的 CSS

.collapse.navbar-collapse {
    color: white;
    position: relative;
    z-index: 2;
}

.mainMenu {
    width: 80% !important;
}

.nav {
    font-family: "Titillium Web",sans-serif;
    padding-left: 5% !important;
}
.nav a {
    color: #ffffff;
    font-size: 16px !important;
}

.home-nav {
    border-bottom: 2px solid;
}

.nav_active a{
    color: #ff9e19 !important;
}

.subnav_wrapper_ul {
    background: none repeat scroll 0 0 #000000;
    display: none;
    margin-top: 1px;
    position: absolute;
    width: 121px;
}
.subnav_wrapper_ul li {
    list-style: outside none none;
    padding: 0 0 0 7px;
}
.subnav_wrapper_ul a {
    display: block;
    font-size: 14px !important;
    margin: 0 10px 0 0 !important;
    padding: 4px 15px;
    text-decoration: none;
}

我的JS

$('ul.navbar-nav li').hover(
    function () {
        $(this).find('.subnav_wrapper_ul:first').css('display','block');
    },
        function () {
            $(this).find('.subnav_wrapper_ul:first').css('display','none');  
    }
);

Answer 1

你可以用 css 做到这一点:

ul.navbar-nav li:hover > ul{ display:block; }