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<html><body><h1>HTML DOM Events</h1><h2>The onmouseover Event</h2><p>Use the addEventListener() method to attach a "mouseover" and "mouseout" event to a h1 element.</p><h1 id="demo">Mouse over me</h1><script>document.getElementById("demo").addEventListener("mouseover", mouseOver);document.getElementById("demo").addEventListener("mouseout", mouseOut);function mouseOver() { document.getElementById("demo").style.color = "red";}function mouseOut() { document.getElementById("demo").style.color = "black";}</script></body></html>