x
<html><body><p>When you enter the input field, a function is triggered which sets the background color to yellow. When you leave the input field, a function is triggered which sets the background color to red.</p>Enter your name: <input type="text" id="myInput" onfocusin="focusFunction()" onfocusout="blurFunction()"><script>// Focus = Changes the background color of input to yellowfunction focusFunction() { document.getElementById("myInput").style.background = "yellow";}// No focus = Changes the background color of input to redfunction blurFunction() { document.getElementById("myInput").style.background = "red";}</script></body></html>