使用 JS 从 html 元素中删除 class
Removing class from html element with JS
我已经为从元素中删除添加的 class 苦苦挣扎了 2 天。
翻遍了整个网络,还是找不到问题的答案。
我可以在导航中添加 class 并显示工作正常的子菜单。
然后我想在用户单击 window 中的任意位置时再次隐藏菜单,但是一旦我键入删除 class 的代码,它就根本不起作用。我只使用 Vanilla JS 而没有先看 jquery 来掌握 JS。
在此先感谢您,在网上找不到任何解决方案!
https://jsfiddle.net/dx6ofnvs/4/
HTML
<nav>
<div class="nav__navigation">
<ul>
<li id="services__btn"> <a href="#"> Leistungen</a></li>
<div class="services__dropdown__container">
<ul id="services__dropdown" class="dropdown">
<li> <a href="#"> Link one</a></li>
<li> <a href="#"> Link two</a></li>
<li> <a href="#"> link three</a></li>
<li> <a href="#"> link four</a></li>
</ul>
</div>
</ul>
</div>
<div class="burger">
<div class="line1"></div>
<div class="line2"></div>
<div class="line3"></div>
</div>
</nav>
CSS
const burger = document.querySelector(".burger");
const nav = document.querySelector(".nav__navigation");
const navLinks = document.querySelectorAll(".nav__navigation li");
const servicesBtn = document.querySelector("#services__btn");
const servicesDropdown = document.querySelector("#services__dropdown");
const servicesDropdownContainer = document.querySelector("#services__dropdown__container")
const html = document.querySelector("html")
///// Open Mobile Menu
burger.addEventListener("click", (navSlide));
function navSlide() {
nav.classList.toggle("nav-active");
}
///// Open Dropdown Desktop Width
servicesBtn.addEventListener("click", (e) => {
servicesDropdown.classList.add("dropdown--active");
})
window.addEventListener("click", (e) => {
if(e.target != servicesDropdown) {
/// I think this code ist the problem that it removes the class immedeatly after shown
servicesDropdown.classList.remove("dropdown--active")
console.log('clicked');
}
})
window函数中的目标元素不是按钮,是link。您应该检查它。我修改了你的fiddle所以你可以检查它
<li id="services__btn"> <a class="button" href="#"> Leistungen</a></li>
...
window.addEventListener("click", (e) => {
let button = document.querySelector(".button");
if(e.target !== button && servicesDropdown.classList.contains("dropdown--active")) {
servicesDropdown.classList.remove("dropdown--active")
console.log('clicked');
}
console.log('e', e.target);
})
对于这种情况,存在一个 (DOM) contains
函数。你可以这样使用:
const burger = document.querySelector(".burger");
const nav = document.querySelector(".nav__navigation");
const navLinks = document.querySelectorAll(".nav__navigation li");
const servicesBtn = document.querySelector("#services__btn");
const servicesDropdown = document.querySelector("#services__dropdown");
const servicesDropdownContainer = document.querySelector(".services__dropdown__container")
const html = document.querySelector("html")
///// Open Mobile Menu
burger.addEventListener("click", (navSlide));
function navSlide() {
nav.classList.toggle("nav-active");
}
///// Open Dropdown Desktop Width
servicesBtn.addEventListener("click", (e) => {
servicesDropdown.classList.toggle("dropdown--active");
})
document.addEventListener("click", (e) => {
if(!servicesDropdownContainer.parentNode.contains(e.target) && servicesDropdown.classList.contains("dropdown--active")) {
servicesDropdown.classList.remove("dropdown--active")
console.log('clicked');
}
})
此外,services__dropdown__container
是 class 而不是 id。
我已经为从元素中删除添加的 class 苦苦挣扎了 2 天。 翻遍了整个网络,还是找不到问题的答案。
我可以在导航中添加 class 并显示工作正常的子菜单。
然后我想在用户单击 window 中的任意位置时再次隐藏菜单,但是一旦我键入删除 class 的代码,它就根本不起作用。我只使用 Vanilla JS 而没有先看 jquery 来掌握 JS。
在此先感谢您,在网上找不到任何解决方案!
https://jsfiddle.net/dx6ofnvs/4/
HTML
<nav>
<div class="nav__navigation">
<ul>
<li id="services__btn"> <a href="#"> Leistungen</a></li>
<div class="services__dropdown__container">
<ul id="services__dropdown" class="dropdown">
<li> <a href="#"> Link one</a></li>
<li> <a href="#"> Link two</a></li>
<li> <a href="#"> link three</a></li>
<li> <a href="#"> link four</a></li>
</ul>
</div>
</ul>
</div>
<div class="burger">
<div class="line1"></div>
<div class="line2"></div>
<div class="line3"></div>
</div>
</nav>
CSS
const burger = document.querySelector(".burger");
const nav = document.querySelector(".nav__navigation");
const navLinks = document.querySelectorAll(".nav__navigation li");
const servicesBtn = document.querySelector("#services__btn");
const servicesDropdown = document.querySelector("#services__dropdown");
const servicesDropdownContainer = document.querySelector("#services__dropdown__container")
const html = document.querySelector("html")
///// Open Mobile Menu
burger.addEventListener("click", (navSlide));
function navSlide() {
nav.classList.toggle("nav-active");
}
///// Open Dropdown Desktop Width
servicesBtn.addEventListener("click", (e) => {
servicesDropdown.classList.add("dropdown--active");
})
window.addEventListener("click", (e) => {
if(e.target != servicesDropdown) {
/// I think this code ist the problem that it removes the class immedeatly after shown
servicesDropdown.classList.remove("dropdown--active")
console.log('clicked');
}
})
window函数中的目标元素不是按钮,是link。您应该检查它。我修改了你的fiddle所以你可以检查它
<li id="services__btn"> <a class="button" href="#"> Leistungen</a></li>
...
window.addEventListener("click", (e) => {
let button = document.querySelector(".button");
if(e.target !== button && servicesDropdown.classList.contains("dropdown--active")) {
servicesDropdown.classList.remove("dropdown--active")
console.log('clicked');
}
console.log('e', e.target);
})
对于这种情况,存在一个 (DOM) contains
函数。你可以这样使用:
const burger = document.querySelector(".burger");
const nav = document.querySelector(".nav__navigation");
const navLinks = document.querySelectorAll(".nav__navigation li");
const servicesBtn = document.querySelector("#services__btn");
const servicesDropdown = document.querySelector("#services__dropdown");
const servicesDropdownContainer = document.querySelector(".services__dropdown__container")
const html = document.querySelector("html")
///// Open Mobile Menu
burger.addEventListener("click", (navSlide));
function navSlide() {
nav.classList.toggle("nav-active");
}
///// Open Dropdown Desktop Width
servicesBtn.addEventListener("click", (e) => {
servicesDropdown.classList.toggle("dropdown--active");
})
document.addEventListener("click", (e) => {
if(!servicesDropdownContainer.parentNode.contains(e.target) && servicesDropdown.classList.contains("dropdown--active")) {
servicesDropdown.classList.remove("dropdown--active")
console.log('clicked');
}
})
此外,services__dropdown__container
是 class 而不是 id。