php - Alternative to using setTimeout with AJAX? -

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hey guys, there more efficient way this?

setinterval('getallwords()', 2000);  function getallwords() {     $.ajax({         type: "get",         url: "queries.php",         data: "action=all",         success: function(data){             dataarray = data.split('|');             $('#words').html('');             (var = 0; < dataarray.length; i++) {                 if ((dataarray[i]).length > 1) {                     $('ul').append('<li>' + dataarray[i] + '</li>');                 }             }         }     }); }

elaboration (?)
this connect every 2 seconds database , checks updated words, there easy way implement push request or minimise database activity?

more info:
my hosting doesn't support installing of ajax push servers , won't install 1 me


:(

if can't install push server, consider hack:

run infinite loop sends answer ajax request once there's new (while(true) { check updated words}).

in ajax code can start request , it's finished start new 1 (eg. readystate == 4 --> start new request)


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