onClick first click only?

[sciencebear]

I have an onClick function that I only want to run on the first click. (For example, if the user clicks away and then clicks back I don't want it to run again.) How can I do this?

[ricmetal]

look at $_SESSION variables

[RichardRotterdam]

use a variable that stores if something has been clicked.

example:

<script type="text/javascript">
window.onload =  function() {
// use var to check if a link has been clicked
var clickedOnce = false;
document.getElementById('my_link').onclick = function() {
	// will only alert when clickedOnce is false
	if(!clickedOnce) {
		clickedOnce = true;
		alert('you clicked me');
	}
}
}
</script>
<a href=# id="my_link">clickme</a>