我有这个使用纯 JS 创建的 Slider 示例。
slider 效果很好。剩下要做的唯一一件事就是激活三个点，这样当第一张幻灯片打开时，第一个点激活，显示与其他点不同的颜色，依此类推。此外，您应该能够在单击点时打开正确的幻灯片，因此第一个点打开第一张幻灯片，第二个点打开第二张幻灯片，依此类推。
你能帮我实现这个目标吗？您可以在下面找到源代码。
const nextBtn = document.querySelector('.nextBtn');
const prevBtn = document.querySelector('.prevBtn');
const container = document.querySelector('.images');
const offers = document.getElementById('offers');
const link = document.getElementById('links');
let colors = ['#7f86ff', '#2932d1', '#00067f'];
let currentSlide = 0;
let texts = ['Change1', 'Change2', 'Change3'];
let currentText = 0;
let links = ['<a href="https:www.google.com">Link1</a>', '<a href="https:www.is.fi">Link2</a>', '<a href="https:www.betsson.com">Link3</a>'];
let currentLink = 0;
function updateSlide(direction) {
currentSlide =
(colors.length + currentSlide + direction)
% colors.length;
container.style.backgroundColor = colors[currentSlide];
container.animate([{opacity:'0.1'}, {opacity:'1.0'}],
{duration: 200, fill:'forwards'})
}
function updateText(direction) {
currentText =
(texts.length + currentText + direction)
% texts.length;
offers.innerHTML = texts[currentText];
offers.animate([{transform:'translateY(-50px)', opacity:'0.0'}, {transform:'translateY(0)', opacity:'1.0'}],
{duration: 200, fill:'forwards'})
}
function updateLink(direction) {
currentLink =
(links.length + currentLink + direction)
% links.length;
link.innerHTML = links[currentLink];
link.animate([{transform:'scale(0,0)'}, {transform:'scale(1.1)'}],
{duration: 200, fill:'forwards'})
}
updateSlide(0);
updateText(0);
updateLink(0);
nextBtn.addEventListener('click', nextSlide);
prevBtn.addEventListener('click', prevSlide);
function nextSlide() {
updateSlide(+1);
updateText(+1);
updateLink(+1);
clearInterval(myInterval);
}
function prevSlide() {
updateSlide(-1);
updateText(-1);
updateLink(-1);
clearInterval();
clearInterval(myInterval);
}
var myInterval = window.setInterval(function(){
updateSlide(+1),updateText(+1),updateLink(+1); },
8000);body {
min-height: 100vh;
display: flex;
align-items: center;
justify-content: center;
background-color: lightblue;
}
.images {
background-color: #4047c9;
flex: 0 0 80%;
min-height: 70vh;
border-radius: 10px;
position: relative;
display: flex;
flex-direction: column;
justify-content: flex-end;
align-items: center;
color: white;
}
#links {
text-decoration: none;
color: white;
border: solid 2px white;
border-radius: 3px;
padding: 5px 10px;
}
#links:hover {
background-color: #000238;
}
a {
color: white;
text-decoration: none;
}
.dots {
display: flex;
margin-top: 120px;
margin-bottom: 50px;
}
#dot1, #dot2, #dot3 {
width: 20px;
height: 20px;
background-color: rgb(147, 151, 249);
border-radius: 50%;
margin: 0px 5px;
cursor: pointer;
}
#dot1:active, #dot2:active, #dot3:active {
background-color: #fff;
}
.btn {
display: inline-block;
background: white;
color: black;
padding: 10px;
border: none;
cursor: pointer;
}
.prevBtn {
position: absolute;
top: 50%;
left: 0;
transform: translate(-50%, -50%);
}
.nextBtn {
position: absolute;
top: 50%;
right: 0;
transform: translate(50%, -50%);
}
.btn:active {
background-color: grey;
color: white;
}
.btn:hover {
background-color: grey;
color: white;
}<body>
<div class="images">
<button type="button" class="btn prevBtn">Prev Btn</button>
<button type="button" class="btn nextBtn">Next Btn</button>
<h1 id="offers">Changing text</h1>
<a href="#" id="links">Links</a>
<div class="dots">
<span id="dot1"></span>
<span id="dot2"></span>
<span id="dot3"></span>
</div>
</div>
</body>最佳答案
首先，根据
https://developer.mozilla.org/en-US/docs/Web/CSS/:active
The :active CSS pseudo-class represents an element (such as a button) that is being activated by the user.
所以如果你想让你的点处于事件状态，你必须编写一种不同的方式来让它们处于事件状态，因为它们当前是 <span>标签，我建议给他们一类 .active ，并添加 Javascript 代码以将该类添加到它们，或在 Javascript 函数中以编程方式添加该样式。
根据您的其他要求，您很可能还必须将这些点设为 <a>标记或类似的东西，这样你就可以在它们上面添加功能，让点击这些点将你带到任何幻灯片。大概是这样的:
function dot1Click() {
updateSlide(1);
updateText(1);
updateLink(1);
dot1.style.backgroundColor = #fff;
}
然后你应该有一些你想要的东西。当我有更多时间整理代码片段时，我会回到这个问题，但我想给你一些东西来帮助你开始!
关于javascript - 使 slider 上的点处于事件状态，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55047613/