Question

I want to get a width from a file to use it as a variable. Trying that:

iconOS_img = new Image();
iconOS_img.src = '/details/images/icon.png';
var iconOS_img_width = iconOS_img.width;

alert(iconOS_img_width);

However, it returns 0.

Answer 1

You have to wait until the image loads. Try this

iconOS_img.onload = function() {
    alert(this.width);
}