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<!DOCTYPE html> <html> <body> <h1>HTML DOM Events</h1> <h2>The focusin and focusout Events</h2> <p>When you enter the input field, a function sets the background color to yellow.</p> <p>When you leave the input field, a function removes the background color.</p> <form id="myForm"> <input type="text" id="myInput"> </form> <script> let x = document.getElementById("myForm"); x.addEventListener("focusin", myFocusFunction); x.addEventListener("focusout", myBlurFunction); function myFocusFunction() { document.getElementById("myInput").style.backgroundColor = "yellow"; } function myBlurFunction() { document.getElementById("myInput").style.backgroundColor = ""; } </script> </body> </html>
