executing a code by mouse click

I need to run a code when i click on a text and i need the same text
to disappear when i click on it.
i know almost nothing about JS, is it possible doing that?

ty.

 

<div id="mytext" style="display:;" onclick="this.style.display='none'">My Text</div>

or to call external function

<div id="mytext" style="display:;" onclick="HideMe()">My Text</div>

<script language="javascript">
function HideMe()
{ document.getElementById("mytext").style.display = 'none'; }
</script>

 

<div id="mytext" style="display:block;" onclick="this.style.display='none';">My Text</div>