Change the height and width of an <img> element:
<!DOCTYPE html> <html> <body> <img id="myImg" src="image1.png" width="100" height="132"> <br> <button type="button" onclick="myFunction()">Change height and width of image</button> <script> function myFunction() {// w w w .ja v a2 s.c o m document.getElementById("myImg").style.height = "200px"; document.getElementById("myImg").style.width = "200px"; } </script> </body> </html>