Simple/Easy JS Click image switcher

This is pretty raw b/c out-of-the-box, Blogger doesn't support code blocks... but this is better than the empty page that existed.

<script>
var onImg= "on.jpg";
var offImg= "off.jpg";
</script>
<img src="on.jpg" onclick="this.src = this.src == offImg ? onImg : offImg;"/>

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onImg and offImg represent the on/off versions

onClick is a ternary expression that looks as the src filename, and replaces its value with the not-selected filename.

Pretty simple actually, but shows off the power of a simple ternary expression in JavaScript.