var classList = last_block.attr('class').split(/\s+/);
var a = /([0-9]{1,})/.exec("blk resort_select_blk_10"); console.log(a);
var str='blk resort_select_blk_10'; alert(str.match(/\d+/));
var str = 'resort_select_blk_10'; if (str == 'resort_select_blk_10') alert(10);