javascript - SetTimeout how to do it? -

i want make code run after 20 seconds settimeout:

<script type="text/javascript">    soundcloud.addeventlistener('onplayerready', function(player, data) {      player.api_play();    }); </script> 

the code works correctly alone don't know how delay it. how can it?

thanks

settimeout(function() {     soundcloud.addeventlistener('onplayerready', function(player, data) {      player.api_play();    });  }, 20000);