Refresh div content without reload page?

I'm having some trubles when update the div content without reload the page. I'm using jquery, php and mysql as well. Well I've tryed:

$('#divId').load("script.php", function(){
   someFunction();
});

But it's not working 开发者_运维技巧at all :( I apreciate some help, thank you.

Change:

$.('#divId').load("script.php", function(){
   someFunction();
})

To:

$('#divId').load('script.php', function(){
   someFunction();
});