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<html><body><h1>My First JavaScript</h1><p>JavaScript can change the content of an HTML element:</p><button type="button" onclick="myFunction()">Click Me!</button><p id="demo">This is a demonstration.</p><script>function myFunction() { document.getElementById("demo").innerHTML = "Hello JavaScript!";}</script></body><!-- Mirrored from www.w3schools.com/html/tryit.asp?filename=tryhtml_script_html by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 16:46:40 GMT --></html>