How TO – Slideshow Gallery

Slideshow Gallery

A slideshow is used to cycle through elements:

Example

<!DOCTYPE html>
<html>
<meta name=”viewport” content=”width=device-width, initial-scale=1″>
<style>
body {
font-family: Arial;
margin: 0;
}

* {
box-sizing: border-box;
}

img {
vertical-align: middle;
}

/* Position the image container (needed to position the left and right arrows) */
.container {
position: relative;
}

/* Hide the images by default */
.mySlides {
display: none;
}

/* Add a pointer when hovering over the thumbnail images */
.cursor {
cursor: pointer;
}

/* Next & previous buttons */
.prev,
.next {
cursor: pointer;
position: absolute;
top: 40%;
width: auto;
padding: 16px;
margin-top: -50px;
color: white;
font-weight: bold;
font-size: 20px;
border-radius: 0 3px 3px 0;
user-select: none;
-webkit-user-select: none;
}

/* Position the “next button” to the right */
.next {
right: 0;
border-radius: 3px 0 0 3px;
}

/* On hover, add a black background color with a little bit see-through */
.prev:hover,
.next:hover {
background-color: rgba(0, 0, 0, 0.8);
}

/* Number text (1/3 etc) */
.numbertext {
color: #f2f2f2;
font-size: 12px;
padding: 8px 12px;
position: absolute;
top: 0;
}

/* Container for image text */
.caption-container {
text-align: center;
background-color: #222;
padding: 2px 16px;
color: white;
}

.row:after {
content: “”;
display: table;
clear: both;
}

/* Six columns side by side */
.column {
float: left;
width: 16.66%;
}

/* Add a transparency effect for thumnbail images */
.demo {
opacity: 0.6;
}

.active,
.demo:hover {
opacity: 1;
}
</style>
<body>

<h2 style=”text-align:center”>Slideshow Gallery</h2>

function plusSlides(n) {
showSlides(slideIndex += n);
}

function currentSlide(n) {
showSlides(slideIndex = n);
}

</body>
</html>

Create A Slideshow Gallery

Step 1) Add HTML:

Example

<!– Container for the image gallery –>
<div class=”container”>

  <!– Full-width images with number text –>
  <div class=”mySlides”>
    <div class=”numbertext”>1 / 6</div>
      <img src=”img_woods_wide.jpg” style=”width:100%”>
  </div>

  <!– Next and previous buttons –>
  <a class=”prev” onclick=”plusSlides(-1)”>❮</a>
  <a class=”next” onclick=”plusSlides(1)”>❯</a>

  <!– Image text –>
  <div class=”caption-container”>
    <p id=”caption”></p>
  </div>

  <!– Thumbnail images –>
  <div class=”row”>
    <div class=”column”>
      <img class=”demo cursor” src=”img_woods.jpg” style=”width:100%” onclick=”currentSlide(1)” alt=”The Woods”>
    </div>
    <div class=”column”>
      <img class=”demo cursor” src=”img_5terre.jpg” style=”width:100%” onclick=”currentSlide(2)” alt=”Cinque Terre”>
    </div>
    <div class=”column”>
      <img class=”demo cursor” src=”img_mountains.jpg” style=”width:100%” onclick=”currentSlide(3)” alt=”Mountains and fjords”>
    </div>
    <div class=”column”>
      <img class=”demo cursor” src=”img_lights.jpg” style=”width:100%” onclick=”currentSlide(4)” alt=”Northern Lights”>
    </div>
    <div class=”column”>
      <img class=”demo cursor” src=”img_nature.jpg” style=”width:100%” onclick=”currentSlide(5)” alt=”Nature and sunrise”>
    </div>
    <div class=”column”>
      <img class=”demo cursor” src=”img_snow.jpg” style=”width:100%” onclick=”currentSlide(6)” alt=”Snowy Mountains”>
    </div>
  </div>
</div>

Step 2) Add CSS:

Style the image gallery, next and previous buttons, the caption text and the dots:

Example

* {
box-sizing: border-box;
}

/* Position the image container (needed to position the left and right arrows) */
.container {
position: relative;
}

/* Hide the images by default */
.mySlides {
display: none;
}

/* Add a pointer when hovering over the thumbnail images */
.cursor {
cursor: pointer;
}

/* Position the “next button” to the right */
.next {
right: 0;
border-radius: 3px 0 0 3px;
}

/* On hover, add a black background color with a little bit see-through */
.prev:hover,
.next:hover {
background-color: rgba(0, 0, 0, 0.8);
}

/* Number text (1/3 etc) */
.numbertext {
color: #f2f2f2;
font-size: 12px;
padding: 8px 12px;
position: absolute;
top: 0;
}

/* Container for image text */
.caption-container {
text-align: center;
background-color: #222;
padding: 2px 16px;
color: white;
}

.row:after {
content: “”;
display: table;
clear: both;
}

/* Six columns side by side */
.column {
float: left;
width: 16.66%;
}

/* Add a transparency effect for thumnbail images */
.demo {
opacity: 0.6;
}

.active,
.demo:hover {
opacity: 1;
}

Step 3) Add JavaScript:

Example

<!DOCTYPE html>
<html>
<meta name=”viewport” content=”width=device-width, initial-scale=1″>
<style>
body {
font-family: Arial;
margin: 0;
}

* {
box-sizing: border-box;
}

img {
vertical-align: middle;
}

/* Position the image container (needed to position the left and right arrows) */
.container {
position: relative;
}

/* Hide the images by default */
.mySlides {
display: none;
}

/* Add a pointer when hovering over the thumbnail images */
.cursor {
cursor: pointer;
}

/* Position the “next button” to the right */
.next {
right: 0;
border-radius: 3px 0 0 3px;
}

/* On hover, add a black background color with a little bit see-through */
.prev:hover,
.next:hover {
background-color: rgba(0, 0, 0, 0.8);
}

/* Number text (1/3 etc) */
.numbertext {
color: #f2f2f2;
font-size: 12px;
padding: 8px 12px;
position: absolute;
top: 0;
}

/* Container for image text */
.caption-container {
text-align: center;
background-color: #222;
padding: 2px 16px;
color: white;
}

.row:after {
content: “”;
display: table;
clear: both;
}

/* Six columns side by side */
.column {
float: left;
width: 16.66%;
}

/* Add a transparency effect for thumnbail images */
.demo {
opacity: 0.6;
}

.active,
.demo:hover {
opacity: 1;
}
</style>
<body>

<h2 style=”text-align:center”>Slideshow Gallery</h2>

function plusSlides(n) {
showSlides(slideIndex += n);
}

function currentSlide(n) {
showSlides(slideIndex = n);
}

</body>
</html>

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