javascript - 删除课程后如何恢复课程?
问题描述
我有一个下拉菜单,右侧有一个箭头,当你点击它时它应该会下降。但是当您再次单击菜单时它不会返回。您可以在下图中看到示例:
当您不单击任何内容时:
https://i.gyazo.com/b7cec5471aa9beff1611421e3ff36747.png
当您单击任何内容时:
https://i.gyazo.com/5744d2459c19d2f9a490a5fe337b4ec8.png
当您单击同一项目时(箭头不会向后移动)
https://i.gyazo.com/b324f91d673e8ad98645f9be95298a30.png
我的jQuery代码:
// menu toggle
jQuery(".advanced-sidebar-nav").on(
"click",
".advanced-sidebar-nav-toggle",
function(e) {
e.preventDefault();
jQuery(".advanced-sidebar-nav-menu-open").each(
function() {
$(this).removeClass("advanced-sidebar-nav-menu-open").siblings("ul").slideUp(300);
$(this).children(".advanced-sidebar-nav-toggle-open").removeClass("advanced-sidebar-nav-toggle-open");
}
);
jQuery(this).toggleClass("advanced-sidebar-nav-toggle-open");
if(jQuery(this).hasClass("advanced-sidebar-nav-toggle-open")) {
jQuery(this)
.parent("a")
.addClass("advanced-sidebar-nav-menu-open")
.siblings("ul")
.slideDown(300);
} else {
jQuery(this)
.parent("a")
.removeClass("advanced-sidebar-nav-menu-open")
.siblings("ul")
.slideUp(300);
}
}
);
HTML 代码:
<div class="advanced-sidebar-nav advanced-sidebar-nav-default"><ul id="menu-sidebar-menu" class="advanced-sidebar-menu"><li id="menu-item-4701" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-4701"><a href="#">Laptops<span class="advanced-sidebar-nav-toggle"></span></a>
<ul class="sub-menu">
<li id="menu-item-4696" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4696"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/laptops/i3/" style="padding-left:40px !important">i3</a></li>
<li id="menu-item-4697" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4697"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/laptops/i5/" style="padding-left:40px !important">i5</a></li>
<li id="menu-item-4698" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4698"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/laptops/i7/" style="padding-left:40px !important">i7</a></li>
<li id="menu-item-4695" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4695"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/laptops/game-laptops/" style="padding-left:40px !important">Game laptops</a></li>
</ul>
</li>
<li id="menu-item-4703" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-4703"><a href="#">Computers<span class="advanced-sidebar-nav-toggle"></span></a>
<ul class="sub-menu">
<li id="menu-item-4709" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4709"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/computers/tower/" style="padding-left:40px !important">Tower</a></li>
<li id="menu-item-4710" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4710"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/computers/workstation/" style="padding-left:40px !important">Workstation</a></li>
<li id="menu-item-4708" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4708"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/computers/game-computers/" style="padding-left:40px !important">Game computers</a></li>
</ul>
</li>
<li id="menu-item-4704" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-4704"><a href="#">Monitoren<span class="advanced-sidebar-nav-toggle"></span></a>
<ul class="sub-menu">
<li id="menu-item-4712" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4712"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/monitoren/19/" style="padding-left:40px !important">19″</a></li>
<li id="menu-item-4713" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4713"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/monitoren/22/" style="padding-left:40px !important">22″</a></li>
<li id="menu-item-4714" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4714"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/monitoren/24/" style="padding-left:40px !important">24″</a></li>
<li id="menu-item-4715" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4715"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/monitoren/27/" style="padding-left:40px !important">27″</a></li>
<li id="menu-item-4716" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4716"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/monitoren/32/" style="padding-left:40px !important">32″</a></li>
</ul>
</li>
<li id="menu-item-4705" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-4705"><a href="#">Netwerkapparatuur<span class="advanced-sidebar-nav-toggle"></span></a>
<ul class="sub-menu">
<li id="menu-item-4721" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4721"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/netwerkapparatuur/switchers/" style="padding-left:40px !important">Switchers</a></li>
<li id="menu-item-4718" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4718"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/netwerkapparatuur/nas/" style="padding-left:40px !important">Nas</a></li>
<li id="menu-item-4722" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4722"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/netwerkapparatuur/thin-clients/" style="padding-left:40px !important">Thin clients</a></li>
<li id="menu-item-4717" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4717"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/netwerkapparatuur/accespoints/" style="padding-left:40px !important">Access Points</a></li>
<li id="menu-item-4719" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4719"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/netwerkapparatuur/repeaters/" style="padding-left:40px !important">Repeaters</a></li>
<li id="menu-item-4720" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4720"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/netwerkapparatuur/routers/" style="padding-left:40px !important">Routers</a></li>
</ul>
</li>
<li id="menu-item-4706" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-4706"><a href="#">Hard Drive<span class="advanced-sidebar-nav-toggle"></span></a>
<ul class="sub-menu">
<li id="menu-item-4725" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4725"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/hard-drive/ssd-drive/" style="padding-left:40px !important">SSD Drive</a></li>
<li id="menu-item-4726" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4726"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/hard-drive/ssd-m-2/" style="padding-left:40px !important">SSD M.2</a></li>
<li id="menu-item-4727" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4727"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/hard-drive/ssd-msata/" style="padding-left:40px !important">SSD Msata</a></li>
<li id="menu-item-4723" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4723"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/hard-drive/sata-2-5/" style="padding-left:40px !important">Sata 2.5″</a></li>
<li id="menu-item-4724" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4724"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/hard-drive/sata-3-5/" style="padding-left:40px !important">Sata 3.5″</a></li>
</ul>
</li>
<li id="menu-item-4707" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-4707"><a href="#">Accessoires<span class="advanced-sidebar-nav-toggle"></span></a>
<ul class="sub-menu">
<li id="menu-item-4729" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4729"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/accessoires/kabels/" style="padding-left:40px !important">Kabels</a></li>
<li id="menu-item-4728" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4728"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/accessoires/adapters/" style="padding-left:40px !important">Adapters</a></li>
<li id="menu-item-4730" class="menu-item menu-item-type-taxonomy menu-item-object-product_cat menu-item-4730"><a href="http://projecten.jumsum.nl/adtcomputers/product-category/accessoires/memory/" style="padding-left:40px !important">Memory</a></li>
</ul>
</li>
</ul></div>
解决方案
发生这种情况是因为您每次单击删除所有-open
类,然后立即将其添加到当前元素。因此,下一次将是相同的 - 删除 + 添加,因此-open
每次单击都会添加类。要解决此问题,您不应使用以下内容删除-open
活动元素的类:
const self = this;
jQuery(".advanced-sidebar-nav-menu-open").each(
function() {
$(this).removeClass("advanced-sidebar-nav-menu-open").siblings("ul").slideUp(300);
$(this).children(".advanced-sidebar-nav-toggle-open").not(self).removeClass("advanced-sidebar-nav-toggle-open");
}
);
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