Set the isMap property:
document.getElementById("myImg").isMap = true;
Click button to specify that the image should be part of a server-side image-map.
<!DOCTYPE html> <html> <body> <a href="/action_page.php"> <img id="myImg" src="image1.png" alt="java2s.com" width="100" height="100"> </a>/*w w w. j a va 2 s. c om*/ <button onclick="myFunction()">Test</button> <p id="demo"></p> <script> function myFunction() { document.getElementById("myImg").isMap = true; document.getElementById("demo").innerHTML = "The image is now part of a server-side image-map."; } </script> </body> </html>