Use the jQuery CSS() Method
To set the CSS background-image property of an element using the jQuery CSS() method, you need to specify the complete property value using the url() functional notation.
For example, if you've an image URL stored in a JavaScript variable then in CSS() method you need to set the value something like this to make it work:
<!DOCTYPE html>
<html lang="en">
<head>
<title>jQuery Setting background-image CSS Property</title>
<style>
.box{
width: 500px;
height: 300px;
border: 5px solid #333;
}
</style>
<script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
<script>
$(document).ready(function(){
// Set background image of a div on click of the button
$("button").click(function(){
var imageUrl = "images/sky.jpg";
$(".box").css("background-image", "url(" + imageUrl + ")");
});
});
</script>
</head>
<body>
<div class="box"></div>
<p><button type="button">Set Background Image</button></p>
</body>
</html>
