js if判断 遍历 替换图片地质

<script>
    $(document).ready(function() {

        var s = "The rain in Spain falls mainly in the plain.";
        var ss = s.substr(12, 5); // 获取子字符串, 从下表12开始, 截取5个字符
        console.log(ss);

        $("#fleam-img img").each(function() {
            //$(this).attr("src");//修改图片路径
            //alert();
            //alert($(this).attr("src").substr(0,4));
            if ($(this).attr("src").substr(0, 4) == 'http') {
                $(this).attr("src", $(this).attr("src"));
            } else {
                $(this).attr("src", "http://jin.mall.365960.com" + $(this).attr("src"));
            }

            //$(this).parent("a").attr("href","newhrefValue"
        });
    });
</script>