I use to declare all the objects I need at the top of my functions, which I use to cache and keep the app fast. For example I have something like: 

```
var $object1 = $('#my_element'),
    $object2 = $('.other_elements'),
    $object3 = $('.again_something_else');

```

I use those variables in the code individually, so for example `$object1.doSomething()` or `$object2.doElse()` but in some scenarios I need to apply the same function to two or more already selected variables. There is a way to merge those variables together, to avoid re-selecting of the elements I need? 

I would avoid this:

```
 $('#my_element, .other_elements').myFunction()

```

and reuse the variables I have already.