Return the width of an image that has been styled with CSS:
var x = document.getElementById("myImg").width;
Click the button to return the width of the image.
<!DOCTYPE html> <html> <body> <img id="myImg" src="image1.png" style="width:100px;height:160px;"> <button onclick="myFunction()">Test</button> <p id="demo"></p> <script> function myFunction() {//w ww. j ava2 s .c om var x = document.getElementById("myImg").width; document.getElementById("demo").innerHTML = x; } </script> </body> </html>