if (classhave(dds.className,"todayandselected") || classhave(dds.className,"istoday")){

todayandselected和istoday

<?php

If($a=$b)

{

 echo"你帮我弄哈嘛！";

}

echo"帮我弄哈！";

?>

If打错了，应是if

恩知道了！快帮我弄哈