I've got this slider from codepen, and I wanted to showcase some work on it later, for example the first slide will be 'Photography' next one can be 'Illustrations' and so on.
我有来自codepen的这个滑块,我想稍后展示它的一些工作,例如第一张幻灯片将是'摄影',下一张可以是'插图',依此类推。
I want to have 3 images that are random chosen on each refresh (I have now one that shows but there are 2 other written in comment in HTML).
我希望在每次刷新时随机选择3个图像(我现在有一个显示但在HTML中有另外两个用注释写的)。
Here is my code.
这是我的代码。
let dots = 4;
let sliderElem = document.querySelector(".slider");
let dotElems = sliderElem.querySelectorAll(".slider__dot");
let indicatorElem = sliderElem.querySelector(".slider__indicator");
Array.prototype.forEach.call(dotElems, dotElem => {
dotElem.addEventListener("click", e => {
let currentPos = parseInt(sliderElem.getAttribute("data-pos"));
let newPos = parseInt(dotElem.getAttribute("data-pos"));
let newDirection = newPos > currentPos ? "right" : "left";
let currentDirection = newPos < currentPos ? "right" : "left";
indicatorElem.classList.remove(`slider__indicator--${currentDirection}`);
indicatorElem.classList.add(`slider__indicator--${newDirection}`);
sliderElem.setAttribute("data-pos", newPos);
});
});
.slider {
position: relative;
width: 100%;
height: 100%;
overflow: hidden;
}
.slider__slides {
position: relative;
width: 400%;
height: 100%;
-webkit-transition: -webkit-transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
transition: -webkit-transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
transition: transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
transition: transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1), -webkit-transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
will-change: transform;
}
.slider[data-pos="0"] .slider__slides {
-webkit-transform: translateX(0%);
transform: translateX(0%);
}
.slider[data-pos="1"] .slider__slides {
-webkit-transform: translateX(-25%);
transform: translateX(-25%);
}
.slider[data-pos="2"] .slider__slides {
-webkit-transform: translateX(-50%);
transform: translateX(-50%);
}
.slider[data-pos="3"] .slider__slides {
-webkit-transform: translateX(-75%);
transform: translateX(-75%);
}
.slider__slide {
float: left;
width: 25%;
height: 100%;
}
.slider__slide img {
width:50%;
display: block;
margin: 0 auto;
}
.slider__dots {
display: -webkit-box;
display: -ms-flexbox;
display: flex;
position: absolute;
bottom: 1.5em;
left: 50%;
-webkit-transform: translateX(-50%);
transform: translateX(-50%);
}
.slider__dot, .slider__indicator {
display: block;
margin: 0 0.5em;
width: 1em;
height: 1em;
background: rgba(255, 255, 255, 0.5);
border-radius: 100px;
}
.slider__indicator {
position: absolute;
background: white;
width: auto;
}
.slider__indicator--left {
-webkit-transition: left 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15);
transition: left 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15);
}
.slider__indicator--right {
-webkit-transition: left 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15);
transition: left 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15);
}
.slider[data-pos="0"] .slider__indicator {
left: 0em;
right: 6em;
}
.slider[data-pos="1"] .slider__indicator {
left: 2em;
right: 4em;
}
.slider[data-pos="2"] .slider__indicator {
left: 4em;
right: 2em;
}
.slider[data-pos="3"] .slider__indicator {
left: 6em;
right: 0em;
}
.center {
display: -webkit-box;
display: -ms-flexbox;
display: flex;
height: 100vh;
-webkit-box-pack: center;
-ms-flex-pack: center;
justify-content: center;
-webkit-box-align: center;
-ms-flex-align: center;
align-items: center;
background: #333;
}
.slider {
max-width: 600px;
max-height: 400px;
box-shadow: 0 0 20px rgba(0, 0, 0, 0.8);
}
.slider__slide:nth-child(1) {
background: #309954;
}
.slider__slide:nth-child(2) {
background: #FFBD3C;
}
.slider__slide:nth-child(3) {
background: #F8593E;
}
.slider__slide:nth-child(4) {
background: #4086FA;
}
<div class="center">
<div class="slider" data-pos="0">
<div class="slider__slides">
<div class="slider__slide">
<img src="http://www.dogster.com/wp-content/uploads/2015/05/google-dog-search-2014-05.jpg">
<!-- Second image that has a chance of showing upload load
<img src="http://static4.businessinsider.com/image/569fdd9ac08a80bd448b7138/google-is-officially-a-dog-company.jpg">
-->
<!-- Third
<img src="http://static4.businessinsider.com/image/569fdd9ac08a80bd448b7138/google-is-officially-a-dog-company.jpg">
-->
</div>
<div class="slider__slide"></div>
<div class="slider__slide"></div>
<div class="slider__slide"></div>
</div>
<div class="slider__dots">
<a href="#" class="slider__indicator"></a>
<a href="#" class="slider__dot" data-pos="0"></a>
<a href="#" class="slider__dot" data-pos="1"></a>
<a href="#" class="slider__dot" data-pos="2"></a>
<a href="#" class="slider__dot" data-pos="3"></a>
</div>
</div>
</div>
I beleive in order to have the random images I need to have a var saved in javascript this way, is that correct?
我相信,为了获得随机图像,我需要以这种方式保存javascript,这是正确的吗?
var imgs = [
'http://www.dogster.com/wp-content/uploads/2015/05/google-dog-search-2014-05.jpg',
'http://static4.businessinsider.com/image/569fdd9ac08a80bd448b7138/google-is-officially-a-dog-company.jpg',
'http://static4.businessinsider.com/image/569fdd9ac08a80bd448b7138/google-is-officially-a-dog-company.jpg'
];
To get a random one:
获得一个随机的:
var img_index = Math.floor( Math.random()*imgs.length );
But how do I know integrate this in HTML?
但我怎么知道在HTML中集成这个?
1 个解决方案
#1
1
If I understand your question correctly, you want to change the initial position of the slider after every refresh.
如果我正确理解您的问题,您希望在每次刷新后更改滑块的初始位置。
Your idea was in the right direction with the Math.random
use.
使用Math.random时,您的想法是正确的方向。
I have modified your code a little bit adding sliderElem.setAttribute("data-pos", Math.floor(Math.random() * dots));
to your Javascript code. This will set the initial position of the slider when the Javascript file loads.
我稍微修改了你的代码,添加了sliderElem.setAttribute(“data-pos”,Math.floor(Math.random()* dots));到您的Javascript代码。这将在加载Javascript文件时设置滑块的初始位置。
I have also filled the slider component with the images you suggested.
我还用你建议的图像填充了滑块组件。
Edit
I have changed the code to randomize the image at the first slide. That slide now have an id="first-slide
to make it more easy to find. As you can see, now there is a function getRandomImage()
that returns the URL of a random image.
我已经更改了代码,以便在第一张幻灯片中随机化图像。该幻灯片现在有一个id =“first-slide,以便更容易找到。正如您所看到的,现在有一个函数getRandomImage()返回随机图像的URL。
You can add more images to the imgs
array and the function will continue selecting a random one from the complete array.
您可以向imgs数组添加更多图像,该函数将继续从完整数组中选择一个随机图像。
I have also changed the rounding function from Math.floor
to Math.round
to give the last image more chances of appearing.
我还将舍入函数从Math.floor更改为Math.round,以使最后一个图像有更多出现的机会。
let dots = 4;
let sliderElem = document.querySelector(".slider");
let dotElems = sliderElem.querySelectorAll(".slider__dot");
let indicatorElem = sliderElem.querySelector(".slider__indicator");
Array.prototype.forEach.call(dotElems, dotElem => {
dotElem.addEventListener("click", e => {
let currentPos = parseInt(sliderElem.getAttribute("data-pos"));
let newPos = parseInt(dotElem.getAttribute("data-pos"));
let newDirection = newPos > currentPos ? "right" : "left";
let currentDirection = newPos < currentPos ? "right" : "left";
indicatorElem.classList.remove(`slider__indicator--${currentDirection}`);
indicatorElem.classList.add(`slider__indicator--${newDirection}`);
sliderElem.setAttribute("data-pos", newPos);
});
});
function getRandomImage() {
let imgs = ['http://www.dogster.com/wp-content/uploads/2015/05/google-dog-search-2014-05.jpg', 'http://static4.businessinsider.com/image/569fdd9ac08a80bd448b7138/google-is-officially-a-dog-company.jpg'];
let pos = Math.round(Math.random() * (imgs.length - 1));
return imgs[pos];
}
document.getElementById('first-slide').setAttribute('src', getRandomImage());
/* Uncomment the line below to randomize slider initial position */
// sliderElem.setAttribute("data-pos", Math.floor(Math.random() * dots));
.slider {
position: relative;
width: 100%;
height: 100%;
overflow: hidden;
}
.slider__slides {
position: relative;
width: 400%;
height: 100%;
-webkit-transition: -webkit-transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
transition: -webkit-transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
transition: transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
transition: transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1), -webkit-transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
will-change: transform;
}
.slider[data-pos="0"] .slider__slides {
-webkit-transform: translateX(0%);
transform: translateX(0%);
}
.slider[data-pos="1"] .slider__slides {
-webkit-transform: translateX(-25%);
transform: translateX(-25%);
}
.slider[data-pos="2"] .slider__slides {
-webkit-transform: translateX(-50%);
transform: translateX(-50%);
}
.slider[data-pos="3"] .slider__slides {
-webkit-transform: translateX(-75%);
transform: translateX(-75%);
}
.slider__slide {
float: left;
width: 25%;
height: 100%;
}
.slider__slide img {
width:50%;
display: block;
margin: 0 auto;
}
.slider__dots {
display: -webkit-box;
display: -ms-flexbox;
display: flex;
position: absolute;
bottom: 1.5em;
left: 50%;
-webkit-transform: translateX(-50%);
transform: translateX(-50%);
}
.slider__dot, .slider__indicator {
display: block;
margin: 0 0.5em;
width: 1em;
height: 1em;
background: rgba(255, 255, 255, 0.5);
border-radius: 100px;
}
.slider__indicator {
position: absolute;
background: white;
width: auto;
}
.slider__indicator--left {
-webkit-transition: left 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15);
transition: left 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15);
}
.slider__indicator--right {
-webkit-transition: left 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15);
transition: left 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15);
}
.slider[data-pos="0"] .slider__indicator {
left: 0em;
right: 6em;
}
.slider[data-pos="1"] .slider__indicator {
left: 2em;
right: 4em;
}
.slider[data-pos="2"] .slider__indicator {
left: 4em;
right: 2em;
}
.slider[data-pos="3"] .slider__indicator {
left: 6em;
right: 0em;
}
.center {
display: -webkit-box;
display: -ms-flexbox;
display: flex;
height: 100vh;
-webkit-box-pack: center;
-ms-flex-pack: center;
justify-content: center;
-webkit-box-align: center;
-ms-flex-align: center;
align-items: center;
background: #333;
}
.slider {
max-width: 600px;
max-height: 400px;
box-shadow: 0 0 20px rgba(0, 0, 0, 0.8);
}
.slider__slide:nth-child(1) {
background: #309954;
}
.slider__slide:nth-child(2) {
background: #FFBD3C;
}
.slider__slide:nth-child(3) {
background: #F8593E;
}
.slider__slide:nth-child(4) {
background: #4086FA;
}
<div class="center">
<div class="slider" data-pos="0">
<div class="slider__slides">
<div class="slider__slide">
<img id="first-slide" src="http://www.dogster.com/wp-content/uploads/2015/05/google-dog-search-2014-05.jpg">
</div>
<div class="slider__slide">
<img src="http://static4.businessinsider.com/image/569fdd9ac08a80bd448b7138/google-is-officially-a-dog-company.jpg">
</div>
<div class="slider__slide">
<img src="http://www.dogster.com/wp-content/uploads/2015/05/google-dog-search-2014-05.jpg"></div>
<div class="slider__slide">
<img src="http://static4.businessinsider.com/image/569fdd9ac08a80bd448b7138/google-is-officially-a-dog-company.jpg">
</div>
</div>
<div class="slider__dots">
<a href="#" class="slider__indicator"></a>
<a href="#" class="slider__dot" data-pos="0"></a>
<a href="#" class="slider__dot" data-pos="1"></a>
<a href="#" class="slider__dot" data-pos="2"></a>
<a href="#" class="slider__dot" data-pos="3"></a>
</div>
</div>
</div>
#1
1
If I understand your question correctly, you want to change the initial position of the slider after every refresh.
如果我正确理解您的问题,您希望在每次刷新后更改滑块的初始位置。
Your idea was in the right direction with the Math.random
use.
使用Math.random时,您的想法是正确的方向。
I have modified your code a little bit adding sliderElem.setAttribute("data-pos", Math.floor(Math.random() * dots));
to your Javascript code. This will set the initial position of the slider when the Javascript file loads.
我稍微修改了你的代码,添加了sliderElem.setAttribute(“data-pos”,Math.floor(Math.random()* dots));到您的Javascript代码。这将在加载Javascript文件时设置滑块的初始位置。
I have also filled the slider component with the images you suggested.
我还用你建议的图像填充了滑块组件。
Edit
I have changed the code to randomize the image at the first slide. That slide now have an id="first-slide
to make it more easy to find. As you can see, now there is a function getRandomImage()
that returns the URL of a random image.
我已经更改了代码,以便在第一张幻灯片中随机化图像。该幻灯片现在有一个id =“first-slide,以便更容易找到。正如您所看到的,现在有一个函数getRandomImage()返回随机图像的URL。
You can add more images to the imgs
array and the function will continue selecting a random one from the complete array.
您可以向imgs数组添加更多图像,该函数将继续从完整数组中选择一个随机图像。
I have also changed the rounding function from Math.floor
to Math.round
to give the last image more chances of appearing.
我还将舍入函数从Math.floor更改为Math.round,以使最后一个图像有更多出现的机会。
let dots = 4;
let sliderElem = document.querySelector(".slider");
let dotElems = sliderElem.querySelectorAll(".slider__dot");
let indicatorElem = sliderElem.querySelector(".slider__indicator");
Array.prototype.forEach.call(dotElems, dotElem => {
dotElem.addEventListener("click", e => {
let currentPos = parseInt(sliderElem.getAttribute("data-pos"));
let newPos = parseInt(dotElem.getAttribute("data-pos"));
let newDirection = newPos > currentPos ? "right" : "left";
let currentDirection = newPos < currentPos ? "right" : "left";
indicatorElem.classList.remove(`slider__indicator--${currentDirection}`);
indicatorElem.classList.add(`slider__indicator--${newDirection}`);
sliderElem.setAttribute("data-pos", newPos);
});
});
function getRandomImage() {
let imgs = ['http://www.dogster.com/wp-content/uploads/2015/05/google-dog-search-2014-05.jpg', 'http://static4.businessinsider.com/image/569fdd9ac08a80bd448b7138/google-is-officially-a-dog-company.jpg'];
let pos = Math.round(Math.random() * (imgs.length - 1));
return imgs[pos];
}
document.getElementById('first-slide').setAttribute('src', getRandomImage());
/* Uncomment the line below to randomize slider initial position */
// sliderElem.setAttribute("data-pos", Math.floor(Math.random() * dots));
.slider {
position: relative;
width: 100%;
height: 100%;
overflow: hidden;
}
.slider__slides {
position: relative;
width: 400%;
height: 100%;
-webkit-transition: -webkit-transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
transition: -webkit-transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
transition: transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
transition: transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1), -webkit-transform 0.3s cubic-bezier(0.51, 0.92, 0.24, 1);
will-change: transform;
}
.slider[data-pos="0"] .slider__slides {
-webkit-transform: translateX(0%);
transform: translateX(0%);
}
.slider[data-pos="1"] .slider__slides {
-webkit-transform: translateX(-25%);
transform: translateX(-25%);
}
.slider[data-pos="2"] .slider__slides {
-webkit-transform: translateX(-50%);
transform: translateX(-50%);
}
.slider[data-pos="3"] .slider__slides {
-webkit-transform: translateX(-75%);
transform: translateX(-75%);
}
.slider__slide {
float: left;
width: 25%;
height: 100%;
}
.slider__slide img {
width:50%;
display: block;
margin: 0 auto;
}
.slider__dots {
display: -webkit-box;
display: -ms-flexbox;
display: flex;
position: absolute;
bottom: 1.5em;
left: 50%;
-webkit-transform: translateX(-50%);
transform: translateX(-50%);
}
.slider__dot, .slider__indicator {
display: block;
margin: 0 0.5em;
width: 1em;
height: 1em;
background: rgba(255, 255, 255, 0.5);
border-radius: 100px;
}
.slider__indicator {
position: absolute;
background: white;
width: auto;
}
.slider__indicator--left {
-webkit-transition: left 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15);
transition: left 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15);
}
.slider__indicator--right {
-webkit-transition: left 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15);
transition: left 0.3s 0.1s cubic-bezier(0.51, 0.92, 0.24, 1.15), right 0.3s cubic-bezier(0.51, 0.92, 0.24, 1.15);
}
.slider[data-pos="0"] .slider__indicator {
left: 0em;
right: 6em;
}
.slider[data-pos="1"] .slider__indicator {
left: 2em;
right: 4em;
}
.slider[data-pos="2"] .slider__indicator {
left: 4em;
right: 2em;
}
.slider[data-pos="3"] .slider__indicator {
left: 6em;
right: 0em;
}
.center {
display: -webkit-box;
display: -ms-flexbox;
display: flex;
height: 100vh;
-webkit-box-pack: center;
-ms-flex-pack: center;
justify-content: center;
-webkit-box-align: center;
-ms-flex-align: center;
align-items: center;
background: #333;
}
.slider {
max-width: 600px;
max-height: 400px;
box-shadow: 0 0 20px rgba(0, 0, 0, 0.8);
}
.slider__slide:nth-child(1) {
background: #309954;
}
.slider__slide:nth-child(2) {
background: #FFBD3C;
}
.slider__slide:nth-child(3) {
background: #F8593E;
}
.slider__slide:nth-child(4) {
background: #4086FA;
}
<div class="center">
<div class="slider" data-pos="0">
<div class="slider__slides">
<div class="slider__slide">
<img id="first-slide" src="http://www.dogster.com/wp-content/uploads/2015/05/google-dog-search-2014-05.jpg">
</div>
<div class="slider__slide">
<img src="http://static4.businessinsider.com/image/569fdd9ac08a80bd448b7138/google-is-officially-a-dog-company.jpg">
</div>
<div class="slider__slide">
<img src="http://www.dogster.com/wp-content/uploads/2015/05/google-dog-search-2014-05.jpg"></div>
<div class="slider__slide">
<img src="http://static4.businessinsider.com/image/569fdd9ac08a80bd448b7138/google-is-officially-a-dog-company.jpg">
</div>
</div>
<div class="slider__dots">
<a href="#" class="slider__indicator"></a>
<a href="#" class="slider__dot" data-pos="0"></a>
<a href="#" class="slider__dot" data-pos="1"></a>
<a href="#" class="slider__dot" data-pos="2"></a>
<a href="#" class="slider__dot" data-pos="3"></a>
</div>
</div>
</div>