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<!DOCTYPE html> <html> <body> <h1>My First JavaScript</h1> <p>Here, a JavaScript changes the value of the src (source) attribute of an image.</p> <script> function light(sw) { var pic; if (sw == 0) { pic = "pic_bulboff.gif" } else { pic = "pic_bulbon.gif" } document.getElementById('myImage').src = pic; } </script> <img id="myImage" src="pic_bulboff.gif" width="100" height="180"> <p> <button type="button" onclick="light(1)">Light On</button> <button type="button" onclick="light(0)">Light Off</button> </p> </body> </html>
