【发布时间】:2020-09-15 10:43:09
【问题描述】:
我正在尝试使用纯 Javascript 制作轮播。我成功地滑动了轮播并创建了左右按钮。
我将幻灯片功能添加到按钮单击事件侦听器中,但在按钮上实现该功能时遇到问题。它的行为不像预期的那样。我的代码如下,我该如何解决这个问题?
const images = document.getElementById('imgs'); //here
const allImages = document.querySelectorAll('#imgs img');
const leftBtn = document.getElementById('left');
const rightBtn = document.getElementById('right');
let index = 0;
function changeSliderPage() {
const dot = [...document.getElementsByClassName('star')];
index++;
if (index > allImages.length - 1) {
index = 0
}
imgs.style.transform = `translateX(${-index * 500}px)`;
dot.forEach((dot, i) => {
if (i === index) {
dot.classList.add('active')
} else {
dot.classList.remove('active')
}
});
};
allImages.forEach(i => {
const elem = document.createElement('div');
elem.classList.add('star');
document.body.appendChild(elem)
});
rightBtn.onclick = () => {
changeSliderPage(index + 1);
}
leftBtn.onclick = () => {
changeSliderPage(index - 1);
}
let x = setInterval(changeSliderPage, 100000);
images.onmouseover = () => {
clearInterval(x)
}
images.onmouseout = () => {
x = setInterval(changeSliderPage, 2000);
}
*{
box-sizing: border-box;
}
body {
margin: 0;
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
}
.carousel {
overflow: hidden;
width: 500px;
height: 500px;
box-shadow: 2px 2px 5px rgba(0, 0, 0, .3);
border-radius: 5px;
}
.image-container {
display: flex;
transition: transform 300ms linear;
transform: translateX(0);
}
img {
width:500px;
height: 500px;
object-fit: cover;
}
.star{
cursor: pointer;
height: 15px;
width: 15px;
margin: 0 10px;
border-radius: 50%;
display: inline-block;
transition: background-color 0.6s ease;
background-color: #eeeeee;
}
.star.active{
background-color: red;
}
button{
cursor: pointer;
position: relative;
font-size: 18px;
transition: 0.6s ease;
user-select: none;
height: 50px;
width: 40px;
display: flex;
justify-content: center;
align-items: center;
align-content: center;
top: calc(50% - 25px);
}
button:hover {
background-color: rgba(0,0,0,0.8);
};
button.left {
border-radius: 3px 0 0 3px;
right: 0;
}
button.left {
border-radius: 3px 0 0 3px;
left: 0;
}
<button id="left">❮</button>
<button id="right">❯</button>
<div class="carousel">
<div class="image-container" id="imgs" >
<img src="https://images.unsplash.com/photo-1599736375341-51b0a848f3c7?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=60" alt="">
<img src="https://images.unsplash.com/photo-1516026672322-bc52d61a55d5?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=60" alt="">
<img src="https://images.unsplash.com/photo-1573081586928-127ecc7948b0?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=60" alt="">
<img src="https://images.unsplash.com/flagged/photo-1572850005109-f4ac7529bf9f?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=60" alt="">
</div>
</div>
【问题讨论】:
-
你可能想改写你的标题,因为它是非常具有误导性的
-
请重新表述标题和问题,并准确说明没有按预期进行。演示中的按钮似乎工作正常。
-
我从来没有见过有人因为代码的行为而对它的行为感到不满???
-
“它的行为很奇怪”请更具体
-
正如其他用户所说,它似乎是正确的,所以请edit您的问题准确解释您所期望的行为以及您认为错误的行为。
标签: javascript html css carousel