# Cache DOM selectors

You select the target container over and over again. You should get it once outside the function, cache it in a variable and reuse it:

    const target = document.getElementById('quotes');

# Naming

Try to use descriptive names instead of `myarray`, `myVar` and `quote`:

    const quotes = [];
    function changeQuoteRandomly() {}

# Style

It's easier to read, if you use single quotes on the strings, as you don't have to escape the double quotes:

    quotes.push('"Important words" by Someone');

You sometimes use a semicolon at the end of the line and sometimes you don't – use only one way and be consistent:

>     var myarray = []
>     var myVar = setInterval(quote, 15000);

I would prefer using `push` to add elements to the array instead of setting the index manually. Or you could even add all elements during initialization:

    const quotes = [
        '"Important words" by Someone',
        '"Other important words" by Someone'
    ];

Both ways make it easier to re-arrange elements later as you don't have to keep track of the index yourself.

# Semantics

Currently your markup looks like this:

>     <div id="quotes">
>         "The single best piece of advice: Constantly think about how you could be doing things better and questioning yourself."<br>
>         <strong> Elon Musk</strong>
>     </div>

You could improve this, by using `blockquote`, `cite` and even `figure` elements. Here you can find more infos and examples on W3C: [4.4.5. The blockquote element](http://w3c.github.io/html/grouping-content.html#the-blockquote-element).

# User experience

While this is a nice addition on your website, there are a few downsides:

- There's no introduction to this section, the visitor has no clue why you're showing them. Try to relate them to your business.
- The first quote is shown after 15s, until then only an empty blue container ist visible.
- 15s between quotes is a really long time. There's no indicator that more is coming, so there's a great chance that a user will not see a second one.