如何防止菜单在鼠标悬停时显示在此菜单中，并使其仅在鼠标单击时显示？

Question

我从网站上下载了sm-blue菜单（我忘记了地址，抱歉）。默认情况下，它显示鼠标悬停和鼠标单击上的子菜单。我希望它只在鼠标点击时显示子菜单。这是代码：

应用程序菜单示例：

<ul class="sm sm-blue pull-left" style="padding-bottom:0px;">
    <li>
        <a href="javascript.void(0);">Menu title</a>
        <li><a href="some_url">Sub menu</a></li>
    </li>
</ul>

sm-blue css：

@import url("googlefont.css");
.sm-blue {
  background: transparent;
  -webkit-border-radius: 8px;
  -moz-border-radius: 8px;
  -ms-border-radius: 8px;
  -o-border-radius: 8px;
  border-radius: 8px;
  -webkit-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  -moz-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}
.sm-blue a, .sm-blue a:hover, .sm-blue a:focus, .sm-blue a:active {
  padding: 10px 20px;
  /* make room for the toggle button (sub indicator) */
  padding-right: 58px;
  background: #3092c0;
  background-image: -webkit-gradient(linear, to bottom, to top, color-stop(0%, #3298c8), color-stop(100%, #2e8cb8));
  background-image: -webkit-linear-gradient(to bottom, #3298c8, #2e8cb8);
  background-image: -moz-linear-gradient(to bottom, #3298c8, #2e8cb8);
  background-image: -o-linear-gradient(to bottom, #3298c8, #2e8cb8);
  background-image: linear-gradient(to bottom, #3298c8, #2e8cb8);
  color: white;
  font-family: "PT Sans Narrow", "Arial Narrow", Arial, Helvetica, sans-serif;
  font-size: 14px;
  /*font-weight: bold;*/
  line-height: 17px;
  text-decoration: none;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
}
.sm-blue a.current {
  background: #006892;
  background-image: -webkit-gradient(linear, to bottom, to top, color-stop(0%, #006188), color-stop(100%, #006f9c));
  background-image: -webkit-linear-gradient(to bottom, #006188, #006f9c);
  background-image: -moz-linear-gradient(to bottom, #006188, #006f9c);
  background-image: -o-linear-gradient(to bottom, #006188, #006f9c);
  background-image: linear-gradient(to bottom, #006188, #006f9c);
  color: white;
}
.sm-blue a.disabled {
  color: #a1d1e8;
}
.sm-blue a span.sub-arrow {
  position: absolute;
  top: 50%;
  margin-top: -17px;
  left: auto;
  right: 4px;
  width: 34px;
  height: 34px;
  overflow: hidden;
  font: bold 16px/34px monospace !important;
  text-align: left;
  text-shadow: none;
  background: rgba(0, 0, 0, 0.1);
  -webkit-border-radius: 4px;
  -moz-border-radius: 4px;
  -ms-border-radius: 4px;
  -o-border-radius: 4px;
  border-radius: 4px;
}
.sm-blue a.highlighted span.sub-arrow:before {
  display: block;
  content: '-';
}
.sm-blue > li:first-child > a, .sm-blue > li:first-child > :not(ul) a {
  -webkit-border-radius: 8px 8px 0 0;
  -moz-border-radius: 8px 8px 0 0;
  -ms-border-radius: 8px 8px 0 0;
  -o-border-radius: 8px 8px 0 0;
  border-radius: 8px 8px 0 0;
}
.sm-blue > li:last-child > a, .sm-blue > li:last-child > *:not(ul) a, .sm-blue > li:last-child > ul,
.sm-blue > li:last-child > ul > li:last-child > a, .sm-blue > li:last-child > ul > li:last-child > *:not(ul) a, .sm-blue > li:last-child > ul > li:last-child > ul,
.sm-blue > li:last-child > ul > li:last-child > ul > li:last-child > a, .sm-blue > li:last-child > ul > li:last-child > ul > li:last-child > *:not(ul) a, .sm-blue > li:last-child > ul > li:last-child > ul > li:last-child > ul,
.sm-blue > li:last-child > ul > li:last-child > ul > li:last-child > ul > li:last-child > a, .sm-blue > li:last-child > ul > li:last-child > ul > li:last-child > ul > li:last-child > *:not(ul) a, .sm-blue > li:last-child > ul > li:last-child > ul > li:last-child > ul > li:last-child > ul,
.sm-blue > li:last-child > ul > li:last-child > ul > li:last-child > ul > li:last-child > ul > li:last-child > a, .sm-blue > li:last-child > ul > li:last-child > ul > li:last-child > ul > li:last-child > ul > li:last-child > *:not(ul) a, .sm-blue > li:last-child > ul > li:last-child > ul > li:last-child > ul > li:last-child > ul > li:last-child > ul {
  -webkit-border-radius: 0 0 8px 8px;
  -moz-border-radius: 0 0 8px 8px;
  -ms-border-radius: 0 0 8px 8px;
  -o-border-radius: 0 0 8px 8px;
  border-radius: 0 0 8px 8px;
}
.sm-blue > li:last-child > a.highlighted, .sm-blue > li:last-child > *:not(ul) a.highlighted,
.sm-blue > li:last-child > ul > li:last-child > a.highlighted, .sm-blue > li:last-child > ul > li:last-child > *:not(ul) a.highlighted,
.sm-blue > li:last-child > ul > li:last-child > ul > li:last-child > a.highlighted, .sm-blue > li:last-child > ul > li:last-child > ul > li:last-child > *:not(ul) a.highlighted,
.sm-blue > li:last-child > ul > li:last-child > ul > li:last-child > ul > li:last-child > a.highlighted, .sm-blue > li:last-child > ul > li:last-child > ul > li:last-child > ul > li:last-child > *:not(ul) a.highlighted,
.sm-blue > li:last-child > ul > li:last-child > ul > li:last-child > ul > li:last-child > ul > li:last-child > a.highlighted, .sm-blue > li:last-child > ul > li:last-child > ul > li:last-child > ul > li:last-child > ul > li:last-child > *:not(ul) a.highlighted {
  -webkit-border-radius: 0;
  -moz-border-radius: 0;
  -ms-border-radius: 0;
  -o-border-radius: 0;
  border-radius: 0;
}
.sm-blue ul {
  background: white;
}
.sm-blue ul ul {
  background: rgba(102, 102, 102, 0.1);
}
.sm-blue ul a, .sm-blue ul a:hover, .sm-blue ul a:focus, .sm-blue ul a:active {
  background: transparent;
  color: #2b82ac;
  font-size: 14px;
  text-shadow: none;
  border-left: 8px solid transparent;
}
.sm-blue ul a.current {
  background: #006892;
  background-image: -webkit-gradient(linear, to bottom, to top, color-stop(0%, #006188), color-stop(100%, #006f9c));
  background-image: -webkit-linear-gradient(to bottom, #006188, #006f9c);
  background-image: -moz-linear-gradient(to bottom, #006188, #006f9c);
  background-image: -o-linear-gradient(to bottom, #006188, #006f9c);
  background-image: linear-gradient(to bottom, #006188, #006f9c);
  color: white;
}
.sm-blue ul a.disabled {
  color: #b3b3b3;
}
.sm-blue ul ul a,
.sm-blue ul ul a:hover,
.sm-blue ul ul a:focus,
.sm-blue ul ul a:active {
  border-left: 16px solid transparent;
}
.sm-blue ul ul ul a,
.sm-blue ul ul ul a:hover,
.sm-blue ul ul ul a:focus,
.sm-blue ul ul ul a:active {
  border-left: 24px solid transparent;
}
.sm-blue ul ul ul ul a,
.sm-blue ul ul ul ul a:hover,
.sm-blue ul ul ul ul a:focus,
.sm-blue ul ul ul ul a:active {
  border-left: 32px solid transparent;
}
.sm-blue ul ul ul ul ul a,
.sm-blue ul ul ul ul ul a:hover,
.sm-blue ul ul ul ul ul a:focus,
.sm-blue ul ul ul ul ul a:active {
  border-left: 40px solid transparent;
}
.sm-blue ul li {
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}
.sm-blue ul li:first-child {
  border-top: 0;
}

@media (min-width: 768px) {
  /* Switch to desktop layout
  -----------------------------------------------
     These transform the menu tree from
     collapsible to desktop (navbar + dropdowns)
  -----------------------------------------------*/
  /* start... (it's not recommended editing these rules) */
  .sm-blue ul {
    position: absolute;
    width: 12em;
  }

  .sm-blue li {
    float: left;
  }

  .sm-blue.sm-rtl li {
    float: right;
  }

  .sm-blue ul li, .sm-blue.sm-rtl ul li, .sm-blue.sm-vertical li {
    float: none;
  }

  .sm-blue a {
    white-space: nowrap;
  }

  .sm-blue ul a, .sm-blue.sm-vertical a {
    white-space: normal;
  }

  .sm-blue .sm-nowrap > li > a, .sm-blue .sm-nowrap > li > :not(ul) a {
    white-space: nowrap;
  }

  /* ...end */
  .sm-blue {
    background: #3092c0;
    background-image: -webkit-gradient(linear, to bottom, to top, color-stop(0%, #3298c8), color-stop(100%, #2e8cb8));
    background-image: -webkit-linear-gradient(to bottom, #3298c8, #2e8cb8);
    background-image: -moz-linear-gradient(to bottom, #3298c8, #2e8cb8);
    background-image: -o-linear-gradient(to bottom, #3298c8, #2e8cb8);
    background-image: linear-gradient(to bottom, #3298c8, #2e8cb8);
    -webkit-border-radius: 8px;
    -moz-border-radius: 8px;
    -ms-border-radius: 8px;
    -o-border-radius: 8px;
    border-radius: 8px;
    -webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
    -moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
  }
  .sm-blue a, .sm-blue a:hover, .sm-blue a:focus, .sm-blue a:active, .sm-blue a.highlighted {
    padding: 13px 24px;
    background: #3092c0;
    background-image: -webkit-gradient(linear, to bottom, to top, color-stop(0%, #3298c8), color-stop(100%, #2e8cb8));
    background-image: -webkit-linear-gradient(to bottom, #3298c8, #2e8cb8);
    background-image: -moz-linear-gradient(to bottom, #3298c8, #2e8cb8);
    background-image: -o-linear-gradient(to bottom, #3298c8, #2e8cb8);
    /*background-image: linear-gradient(to bottom, #3298c8, #2e8cb8);*/
    background-image: linear-gradient(to bottom, #3c8dbc, #3c8dbc);
    color: white;
  }
  .sm-blue a:hover, .sm-blue a:focus, .sm-blue a:active, .sm-blue a.highlighted {
    background: #2b82ac;
    background-image: -webkit-gradient(linear, to bottom, to top, color-stop(0%, #2d89b4), color-stop(100%, #297ca3));
    background-image: -webkit-linear-gradient(to bottom, #2d89b4, #297ca3);
    background-image: -moz-linear-gradient(to bottom, #2d89b4, #297ca3);
    background-image: -o-linear-gradient(to bottom, #2d89b4, #297ca3);
    background-image: linear-gradient(to bottom, #2d89b4, #297ca3);
  }
  .sm-blue a.current {
    background: #006892;
    background-image: -webkit-gradient(linear, to bottom, to top, color-stop(0%, #006188), color-stop(100%, #006f9c));
    background-image: -webkit-linear-gradient(to bottom, #006188, #006f9c);
    background-image: -moz-linear-gradient(to bottom, #006188, #006f9c);
    background-image: -o-linear-gradient(to bottom, #006188, #006f9c);
    background-image: linear-gradient(to bottom, #006188, #006f9c);
    color: white;
  }
  .sm-blue a.disabled {
    background: #3092c0;
    background-image: -webkit-gradient(linear, to bottom, to top, color-stop(0%, #3298c8), color-stop(100%, #2e8cb8));
    background-image: -webkit-linear-gradient(to bottom, #3298c8, #2e8cb8);
    background-image: -moz-linear-gradient(to bottom, #3298c8, #2e8cb8);
    background-image: -o-linear-gradient(to bottom, #3298c8, #2e8cb8);
    background-image: linear-gradient(to bottom, #3298c8, #2e8cb8);
    color: #a1d1e8;
  }
  .sm-blue a span.sub-arrow {
    top: auto;
    margin-top: 0;
    bottom: 30%;
    margin-left: -5px;
    right: 5%;
    width: 0;
    height: 0;
    border-width: 5px;
    border-style: solid dashed dashed dashed;
    border-color: #a1d1e8 transparent transparent transparent;
    background: transparent;
    -webkit-border-radius: 0;
    -moz-border-radius: 0;
    -ms-border-radius: 0;
    -o-border-radius: 0;
    border-radius: 0;
  }
  .sm-blue a.highlighted span.sub-arrow:before {
    display: none;
  }
  .sm-blue > li:first-child > a, .sm-blue > li:first-child > :not(ul) a {
    -webkit-border-radius: 8px 0 0 8px;
    -moz-border-radius: 8px 0 0 8px;
    -ms-border-radius: 8px 0 0 8px;
    -o-border-radius: 8px 0 0 8px;
    border-radius: 8px 0 0 8px;
  }
  .sm-blue > li:last-child > a, .sm-blue > li:last-child > :not(ul) a {
    -webkit-border-radius: 0 8px 8px 0 !important;
    -moz-border-radius: 0 8px 8px 0 !important;
    -ms-border-radius: 0 8px 8px 0 !important;
    -o-border-radius: 0 8px 8px 0 !important;
    border-radius: 0 8px 8px 0 !important;
  }
  .sm-blue > li {
    border-left: 1px solid #2b82ac;
  }
  .sm-blue > li:first-child {
    border-left: 0;
  }
  .sm-blue ul {
    border: 1px solid #a8a8a8;
    padding: 7px 0;
    background: white;
    -webkit-border-radius: 0 0 4px 4px;
    -moz-border-radius: 0 0 4px 4px;
    -ms-border-radius: 0 0 4px 4px;
    -o-border-radius: 0 0 4px 4px;
    border-radius: 0 0 4px 4px;
    -webkit-box-shadow: 0 5px 12px rgba(0, 0, 0, 0.2);
    -moz-box-shadow: 0 5px 12px rgba(0, 0, 0, 0.2);
    box-shadow: 0 5px 12px rgba(0, 0, 0, 0.2);
  }
  .sm-blue ul ul {
    -webkit-border-radius: 4px;
    -moz-border-radius: 4px;
    -ms-border-radius: 4px;
    -o-border-radius: 4px;
    border-radius: 4px;
    background: white;
  }
  .sm-blue ul a, .sm-blue ul a:hover, .sm-blue ul a:focus, .sm-blue ul a:active, .sm-blue ul a.highlighted {
    border: 0 !important;
    padding: 9px 23px;
    background: transparent;
    color: #2b82ac;
    -webkit-border-radius: 0 !important;
    -moz-border-radius: 0 !important;
    -ms-border-radius: 0 !important;
    -o-border-radius: 0 !important;
    border-radius: 0 !important;
  }
  .sm-blue ul a:hover, .sm-blue ul a:focus, .sm-blue ul a:active, .sm-blue ul a.highlighted {
    background: #3092c0;
    background-image: -webkit-gradient(linear, to bottom, to top, color-stop(0%, #3298c8), color-stop(100%, #2e8cb8));
    background-image: -webkit-linear-gradient(to bottom, #3298c8, #2e8cb8);
    background-image: -moz-linear-gradient(to bottom, #3298c8, #2e8cb8);
    background-image: -o-linear-gradient(to bottom, #3298c8, #2e8cb8);
    background-image: linear-gradient(to bottom, #3298c8, #2e8cb8);
    color: white;
  }
  .sm-blue ul a.current {
    background: #006892;
    background-image: -webkit-gradient(linear, to bottom, to top, color-stop(0%, #006188), color-stop(100%, #006f9c));
    background-image: -webkit-linear-gradient(to bottom, #006188, #006f9c);
    background-image: -moz-linear-gradient(to bottom, #006188, #006f9c);
    background-image: -o-linear-gradient(to bottom, #006188, #006f9c);
    background-image: linear-gradient(to bottom, #006188, #006f9c);
    color: white;
  }
  .sm-blue ul a.disabled {
    background: white;
    color: #b3b3b3;
  }
  .sm-blue ul a span.sub-arrow {
    top: 50%;
    margin-top: -5px;
    bottom: auto;
    left: auto;
    margin-left: 0;
    right: 10px;
    border-style: dashed dashed dashed solid;
    border-color: transparent transparent transparent #a1d1e8;
  }
  .sm-blue ul li {
    border: 0;
  }
  .sm-blue span.scroll-up,
  .sm-blue span.scroll-down {
    position: absolute;
    display: none;
    visibility: hidden;
    overflow: hidden;
    background: white;
    height: 20px;
  }
  .sm-blue span.scroll-up-arrow, .sm-blue span.scroll-down-arrow {
    position: absolute;
    top: -2px;
    left: 50%;
    margin-left: -8px;
    width: 0;
    height: 0;
    overflow: hidden;
    border-width: 8px;
    border-style: dashed dashed solid dashed;
    border-color: transparent transparent #2b82ac transparent;
  }
  .sm-blue span.scroll-down-arrow {
    top: 6px;
    border-style: solid dashed dashed dashed;
    border-color: #2b82ac transparent transparent transparent;
  }
  .sm-blue.sm-rtl.sm-vertical a span.sub-arrow {
    right: auto;
    left: 10px;
    border-style: dashed solid dashed dashed;
    border-color: transparent #a1d1e8 transparent transparent;
  }
  .sm-blue.sm-rtl > li:first-child > a, .sm-blue.sm-rtl > li:first-child > :not(ul) a {
    -webkit-border-radius: 0 8px 8px 0;
    -moz-border-radius: 0 8px 8px 0;
    -ms-border-radius: 0 8px 8px 0;
    -o-border-radius: 0 8px 8px 0;
    border-radius: 0 8px 8px 0;
  }
  .sm-blue.sm-rtl > li:last-child > a, .sm-blue.sm-rtl > li:last-child > :not(ul) a {
    -webkit-border-radius: 8px 0 0 8px !important;
    -moz-border-radius: 8px 0 0 8px !important;
    -ms-border-radius: 8px 0 0 8px !important;
    -o-border-radius: 8px 0 0 8px !important;
    border-radius: 8px 0 0 8px !important;
  }
  .sm-blue.sm-rtl > li:first-child {
    border-left: 1px solid #2b82ac;
  }
  .sm-blue.sm-rtl > li:last-child {
    border-left: 0;
  }
  .sm-blue.sm-rtl ul a span.sub-arrow {
    right: auto;
    left: 10px;
    border-style: dashed solid dashed dashed;
    border-color: transparent #a1d1e8 transparent transparent;
  }
  .sm-blue.sm-vertical {
    -webkit-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    -moz-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  }
  .sm-blue.sm-vertical a {
    padding: 9px 23px;
  }
  .sm-blue.sm-vertical a span.sub-arrow {
    top: 50%;
    margin-top: -5px;
    bottom: auto;
    left: auto;
    margin-left: 0;
    right: 10px;
    border-style: dashed dashed dashed solid;
    border-color: transparent transparent transparent #a1d1e8;
  }
  .sm-blue.sm-vertical > li:first-child > a, .sm-blue.sm-vertical > li:first-child > :not(ul) a {
    -webkit-border-radius: 8px 8px 0 0;
    -moz-border-radius: 8px 8px 0 0;
    -ms-border-radius: 8px 8px 0 0;
    -o-border-radius: 8px 8px 0 0;
    border-radius: 8px 8px 0 0;
  }
  .sm-blue.sm-vertical > li:last-child > a, .sm-blue.sm-vertical > li:last-child > :not(ul) a {
    -webkit-border-radius: 0 0 8px 8px !important;
    -moz-border-radius: 0 0 8px 8px !important;
    -ms-border-radius: 0 0 8px 8px !important;
    -o-border-radius: 0 0 8px 8px !important;
    border-radius: 0 0 8px 8px !important;
  }
  .sm-blue.sm-vertical > li {
    border-left: 0 !important;
  }
  .sm-blue.sm-vertical ul {
    -webkit-border-radius: 4px !important;
    -moz-border-radius: 4px !important;
    -ms-border-radius: 4px !important;
    -o-border-radius: 4px !important;
    border-radius: 4px !important;
  }
  .sm-blue.sm-vertical ul a {
    padding: 9px 23px;
  }
}

那么如何防止子菜单在这种情况下悬停显示？

Answer 1

这是jQuery的SmartMenu插件，实际上sm-blue是一个主题类。

首先，我认为你的结构不是很好。你不能在李下筑巢。它应该是：

<ul class="sm sm-blue pull-left" style="padding-bottom:0px;">
    <li>
        <a href="javascript.void(0);">Menu title</a>
        <ul>
          <li><a href="some_url">Sub menu Item</a></li>
        </ul>
    </li>
</ul>

无论如何，我猜他们提供了noMouseOver选项，只需在初始化脚本时将其设置为true。

或者您可以通过实现JavaScript处理程序手动执行此操作，因为css无法检测单击偶数。首先通过更改display属性来禁用默认css：hover行为。然后你可以使用这样的东西（jQuery）：

$('.sm>li').click(function(){
  $(this).find('ul').toggle();
});

或者

$('.sm>li').click(function(){
  
  if($(this).find('ul').hasClass('open')){
    $(this).find('ul').removeClass('open');
  } else {
    $(this).find('ul').addClass('open');
  }
  
});

哪个类open应该在你的css中使用display：block属性定义，默认情况下子菜单应该有display：none属性。

有几种方法可以通过jQuery

实现这一目标