On a click event for a div, I'm trying to assign a variable the text value of the first child of that divs parent div. For example, the html is something like this:

```
<div class="parentDiv">
    <div class="firstChild">
        1234
    </div>

    <div class="secondChild">
        Hello
    </div>

    <div class="thridChild">
        Bye
    </div>

</div>

```

So I want it to assign a variable the text value of the firstChild div whenever the click on anything inside the parent div. How would you go about doing this?