how to select elements by attrib in container

how to select elements by attrib in container

Hi,

I'm having trouble figuring out how to select elements within a container based on an attribute value.
I want to be able to perform operations like

$.each(('[myAttr="someVal"]', $('#myContainer'), function(){
      // do something
});

clear all items with matching attribute value in a container
$('[myAttr="someVal"]', $('#myContainer')).val('');

can anyone help?

thanks
Matt