JAVASCRIPT

change background image with jquery

jQuery(document).ready(function($) {
    $('.bg-image').css("background-image", "url('myurl.jpg')");
});

add background image to div using jquery

var imageUrl = "images/sky.jpg";
$(".div_with_class").css("background-image", "url(" + imageUrl + ")");

jquery set style background image

$('myObject').css('background-image', 'url(' + imageUrl + ')');

jquery add style background-image

$('myObject').css('background-image', 'url(' + imageUrl + ')');

jQuery get background image url of element

jQuery('selector').css('background-image'); // gets the image URL
jQuery('selector').css('background-image', 'path/to/image.jpg'); // sets the image URL