4.8 循环广告条添加链接

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="refresh" content="20">
    <link rel="stylesheet" href="myCSS.css">
    <script>
        var index = 0;
        function start() {
            var images = ["src/test_on.png","src/test_off.png"];
            var myImage = document.getElementById("myImageID");
            myImage.src = images[index % 2];
            index++;
            setTimeout(start,2000);
        }
        function linkChange() {
            document.getElementById("myImageID").parentNode.onclick = function () {
                var links = ["https://www.baidu.com","https:www.google.com"];
                document.location.href = links[index % 2];
                return false;
            };
            start();
        }
        window.onload = linkChange;
    </script>
</head>
<body>

<a href="https://www.baidu.com"><img id="myImageID" src="src/test_on.png"></a>

</body>
</html>