如何更改 Javascript 中列表的字体颜色?
How to change the font color of a list in Javascript?
所以,我试图让我的这些导航链接在我点击按钮时改变它的颜色,但它似乎不起作用。
<ul class="nav-links">
<li id = link><a href="#">Home</a></li>
<li id = link><a href="#">Projects</a></li>
<li id = link><a href="#">About</a></li>
<li id = link><a href="#">Contacts</a></li>
</ul>
<label class="toggle">
<input type="checkbox" class="check">
<span class="slider" onclick="dark()"></span>
</label>
我尝试执行此脚本,但它仍然不起作用
const text = document.querySelector(".logo");
const body = document.querySelector("body");
const banner = document.querySelector(".L-banner");
const navLinks = document.getElementById("#link");
function dark(){
text.style.color = "#fff";
body.style.background = "#000";
banner.style.color = "#fff";
for(var i = 0; i < navLinks.length; i++){
navLinks[i].style.color = "#fffff";
}
}
您不能为多个元素指定相同的 ID,并且 querySelector 只能 select 一个元素。
到select所有链接,可以使用querySelectorAll
document.getElementById('button').addEventListener('click', changeColor);
function changeColor() {
const links = [...document.querySelectorAll('.nav-links li a')];
links.forEach(link => link.style.color = "cornflowerblue");
}
<ul class="nav-links">
<li>
<a href="#">Home</a>
</li>
<li>
<a href="#">Projects</a>
</li>
<li>
<a href="#">About</a>
</li>
<li>
<a href="#">Contacts</a>
</li>
</ul>
<button id="button">Change link color</button>
你应该改成这个
const navLinks = document.querySelectorAll("#link a");
也别忘了修复html
<ul class="nav-links">
<li id="link"><a href="#">Home</a></li>
<li id="link"><a href="#">Projects</a></li>
<li id="link" ink><a href="#">About</a></li>
<li id="link" ink><a href="#">Contacts</a></li>
</ul>
所以,我试图让我的这些导航链接在我点击按钮时改变它的颜色,但它似乎不起作用。
<ul class="nav-links">
<li id = link><a href="#">Home</a></li>
<li id = link><a href="#">Projects</a></li>
<li id = link><a href="#">About</a></li>
<li id = link><a href="#">Contacts</a></li>
</ul>
<label class="toggle">
<input type="checkbox" class="check">
<span class="slider" onclick="dark()"></span>
</label>
我尝试执行此脚本,但它仍然不起作用
const text = document.querySelector(".logo");
const body = document.querySelector("body");
const banner = document.querySelector(".L-banner");
const navLinks = document.getElementById("#link");
function dark(){
text.style.color = "#fff";
body.style.background = "#000";
banner.style.color = "#fff";
for(var i = 0; i < navLinks.length; i++){
navLinks[i].style.color = "#fffff";
}
}
您不能为多个元素指定相同的 ID,并且 querySelector 只能 select 一个元素。
到select所有链接,可以使用querySelectorAll
document.getElementById('button').addEventListener('click', changeColor);
function changeColor() {
const links = [...document.querySelectorAll('.nav-links li a')];
links.forEach(link => link.style.color = "cornflowerblue");
}
<ul class="nav-links">
<li>
<a href="#">Home</a>
</li>
<li>
<a href="#">Projects</a>
</li>
<li>
<a href="#">About</a>
</li>
<li>
<a href="#">Contacts</a>
</li>
</ul>
<button id="button">Change link color</button>
你应该改成这个
const navLinks = document.querySelectorAll("#link a");
也别忘了修复html
<ul class="nav-links">
<li id="link"><a href="#">Home</a></li>
<li id="link"><a href="#">Projects</a></li>
<li id="link" ink><a href="#">About</a></li>
<li id="link" ink><a href="#">Contacts</a></li>
</ul>