Question

function Scale(){
    X = innerWidth / 1024;
    Y = innerHeight / 768;

    Z = document.getElementById("IFM");
    Z.style.transform = "scale(X, Y)";
}

I have a problem with this code. I couldn’t use variables in scale!
What can I do with this problem?

Answer 1

JavaScript has no inline string variables. All you can do is concatenate strings:

Z.style.transform = "scale("+X+", "+Y+")";

The numbers will be implicitly converted to strings.

You might as well use some custom sprintf-like format- or replace-methods, but usually concatenation with + is simpler.