set an attribute background image javascript
function bg() { var imgCount = 3; var dir = 'http://local.statamic.com/_themes/img/'; // I changed your random generator //floor: helps getting a random integer var randomCount = (Math.floor(Math.random() * imgCount)); // I changed your array to the literal notation. The literal notation is preferred. var images = ['001.png', '002.png', '003.png']; // I changed this section to just define the style attribute the best way I know how. document.getElementById('banner').setAttribute("style", "background-image: url(" + dir + images[randomCount] + ");background-repeat: no-repeat;background-size: 388px 388px"); } // Don't forget to run the function instead of just defining it. bg();
