How TO – Image Grid

Image Grid

Learn how to create an image gallery that varies between four, two or full-width images with a click of a button:

Example

<!DOCTYPE html>
<html>
<head>
<meta name=”viewport” content=”width=device-width, initial-scale=1.0″>
<style>
* {
box-sizing: border-box;
}

body {
margin: 0;
font-family: Arial, Helvetica, sans-serif;
}

.header {
text-align: center;
padding: 32px;
}

.row {
display: -ms-flexbox; /* IE 10 */
display: flex;
-ms-flex-wrap: wrap; /* IE 10 */
flex-wrap: wrap;
padding: 0 4px;
}

/* Create two equal columns that sits next to each other */
.column {
-ms-flex: 50%; /* IE 10 */
flex: 50%;
padding: 0 4px;
}

.column img {
margin-top: 8px;
vertical-align: middle;
}

/* Style the buttons */
.btn {
border: none;
outline: none;
padding: 10px 16px;
background-color: #f1f1f1;
cursor: pointer;
font-size: 18px;
}

.btn:hover {
background-color: #ddd;
}

.btn.active {
background-color: #666;
color: white;
}
</style>
</head>
<body>

<!– Header –>
<div id=”myHeader”>
<h1>Image Grid</h1>
<p>Click on the buttons to change the grid view.</p>
<button onclick=”one()”>1</button>
<button onclick=”two()”>2</button>
<button onclick=”four()”>4</button>
</div>

<!– Photo Grid –>
<div>
<div>
<img src=”/w3images/wedding.jpg” style=”width:100%”>
<img src=”/w3images/rocks.jpg” style=”width:100%”>
<img src=”/w3images/falls2.jpg” style=”width:100%”>
<img src=”/w3images/paris.jpg” style=”width:100%”>
<img src=”/w3images/nature.jpg” style=”width:100%”>
<img src=”/w3images/mist.jpg” style=”width:100%”>
<img src=”/w3images/paris.jpg” style=”width:100%”>
</div>
<div>
<img src=”/w3images/underwater.jpg” style=”width:100%”>
<img src=”/w3images/ocean.jpg” style=”width:100%”>
<img src=”/w3images/wedding.jpg” style=”width:100%”>
<img src=”/w3images/mountainskies.jpg” style=”width:100%”>
<img src=”/w3images/rocks.jpg” style=”width:100%”>
<img src=”/w3images/underwater.jpg” style=”width:100%”>
</div>
<div>
<img src=”/w3images/wedding.jpg” style=”width:100%”>
<img src=”/w3images/rocks.jpg” style=”width:100%”>
<img src=”/w3images/falls2.jpg” style=”width:100%”>
<img src=”/w3images/paris.jpg” style=”width:100%”>
<img src=”/w3images/nature.jpg” style=”width:100%”>
<img src=”/w3images/mist.jpg” style=”width:100%”>
<img src=”/w3images/paris.jpg” style=”width:100%”>
</div>
<div>
<img src=”/w3images/underwater.jpg” style=”width:100%”>
<img src=”/w3images/ocean.jpg” style=”width:100%”>
<img src=”/w3images/wedding.jpg” style=”width:100%”>
<img src=”/w3images/mountainskies.jpg” style=”width:100%”>
<img src=”/w3images/rocks.jpg” style=”width:100%”>
<img src=”/w3images/underwater.jpg” style=”width:100%”>
</div>
</div>

// Declare a loop variable
var i;

// Full-width images
function one() {
for (i = 0; i < elements.length; i++) {
elements[i].style.msFlex = “100%”; // IE10
elements[i].style.flex = “100%”;
}
}

// Two images side by side
function two() {
for (i = 0; i < elements.length; i++) {
elements[i].style.msFlex = “50%”; // IE10
elements[i].style.flex = “50%”;
}
}

// Four images side by side
function four() {
for (i = 0; i < elements.length; i++) {
elements[i].style.msFlex = “25%”; // IE10
elements[i].style.flex = “25%”;
}
}

// Add active class to the current button (highlight it)
var header = document.getElementById(“myHeader”);
var btns = header.getElementsByClassName(“btn”);
for (var i = 0; i < btns.length; i++) {
btns[i].addEventListener(“click”, function() {
var current = document.getElementsByClassName(“active”);
current[0].className = current[0].className.replace(” active”, “”);
this.className += ” active”;
});
}
</script>

</body>
</html>

Creating an Image Grid

Step 1) Add HTML:

Example

Step 2) Add CSS:

Use CSS Flexbox to create the layout:

Example

<!DOCTYPE html>
<html>
<style>
* {
box-sizing: border-box;
}

body {
margin: 0;
font-family: Arial;
}

.header {
text-align: center;
padding: 32px;
}

/* Create two equal columns that floats next to each other */
.column {
float: left;
width: 50%;
padding: 10px;
}

.column img {
margin-top: 12px;
}

/* Clear floats after the columns */
.row:after {
content: “”;
display: table;
clear: both;
}
</style>
<body>

<!– Header –>
<div>
<h1>Image Grid</h1>
</div>

</body>
</html>

Step 3) Add JavaScript:

Create a Controllable Grid View Using JavaScript:

Example

<!DOCTYPE html>
<html>
<head>
<meta name=”viewport” content=”width=device-width, initial-scale=1.0″>
<style>
* {
box-sizing: border-box;
}

body {
margin: 0;
font-family: Arial, Helvetica, sans-serif;
}

.header {
text-align: center;
padding: 32px;
}

.row {
display: -ms-flexbox; /* IE 10 */
display: flex;
-ms-flex-wrap: wrap; /* IE 10 */
flex-wrap: wrap;
padding: 0 4px;
}

/* Create two equal columns that sits next to each other */
.column {
-ms-flex: 50%; /* IE 10 */
flex: 50%;
padding: 0 4px;
}

.column img {
margin-top: 8px;
vertical-align: middle;
}

/* Style the buttons */
.btn {
border: none;
outline: none;
padding: 10px 16px;
background-color: #f1f1f1;
cursor: pointer;
font-size: 18px;
}

.btn:hover {
background-color: #ddd;
}

.btn.active {
background-color: #666;
color: white;
}
</style>
</head>
<body>

// Declare a loop variable
var i;

// Full-width images
function one() {
for (i = 0; i < elements.length; i++) {
elements[i].style.msFlex = “100%”; // IE10
elements[i].style.flex = “100%”;
}
}

// Two images side by side
function two() {
for (i = 0; i < elements.length; i++) {
elements[i].style.msFlex = “50%”; // IE10
elements[i].style.flex = “50%”;
}
}

// Four images side by side
function four() {
for (i = 0; i < elements.length; i++) {
elements[i].style.msFlex = “25%”; // IE10
elements[i].style.flex = “25%”;
}
}

</body>
</html>

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