问题描述
我只想显示活动类别的子类别。
我试图通过向所有子类别元素添加一个类“d-none”(显示:无),然后从适当的子类别中删除“d-none”类来实现这一点。我通过 ... if (subSubCategoryArray[i].classList.contains === clicked.id)
确定这一点,但它不起作用。
假设这是我的代码。 console.log(clicked.id) 返回正确的值,但“d-none”类不会从适当的元素中删除。
非常欢迎任何帮助。谢谢
<div class="sub-main" id="one">
<a href="main-1">Main Category One</a>
</div>
<div class="sub-sub one" id="one-one">
<a href="main-1-1">Sub One One</a>
</div>
<div class="sub-sub one" id="one-two">
<a href="main-1-2">Sub One Two</a>
</div>
<div class="sub-sub one" id="one-three">
<a href="main-1-3">Sub One Three</a>
</div>
<div class="sub-main" id="two">
<a href="main-2">Main Category Two</a>
</div>
<div class="sub-sub two" id="two-one">
<a href="main-2-1">Sub Two One</a>
</div>
<div class="sub-sub two" id="two-two">
<a href="main-2-2">Sub Two Two</a>
</div>
<div class="sub-main" id="three">
<a href="main-3">Main Category Three</a>
</div>
function ActiveMain (clicked_id){
for (let i = 0; i < mainSubCategoryArray.length; i++){
mainSubCategoryArray[i].classList.remove("active");
}
var clicked = document.getElementById(clicked_id);
clicked.classList.add("active");
console.log(clicked);
console.log(clicked.id);
for (let i = 0; i < subSubCategoryArray.length; i++){
subSubCategoryArray[i].classList.add("d-none");
console.log(clicked.id);
if (subSubCategoryArray[i].classList.contains === clicked.id){
subSubCategoryArray[i].classList.remove("d-none");
}
}
}
解决方法
您正在将 classList.contains
作为函数与 ID 进行比较,而您应该执行以下操作:
subSubCategoryArray[i].classList.contains(clicked.id);