Jquery / javascript show more button if have more than 4 items [closed]

Jquery show more button if have more than 4 items.

how to make it?

HTML structure:

<ul class="icons">
    <li class="icon"><a href="link01"><img src="img01" /></a></li>
    <li class="icon"><a href="link02"><img src="img02" /></a></li>
    <li class="icon"><a href="link03"><img src="img03" /></a></li>
    <li class="icon"><a href="link04"><img src="img04" /></a></li>
    <li class="icon"><a href="link05"><img src="img05" /></a></li>
    <li class="icon"><a href="link06"><img src="img06" /></a></li>
    <li class="icon"><a href="link07"><img src="img07" /></a></li>
    <li class="icon"><a href="link08"><img src="img08" /></a></li>
</ul>