How can I center the screen and display it to fit the current screen size?

[HAEKWANG DAN]

I use code below.

const screenSize = {
 "w": Math.max(document.documentElement.clientWidth, window.innerWidth || 0),
 "h": Math.max(document.documentElement.clientHeight, window.innerHeight || 0)
};
let initalZoom = (screenSize.w / elemWid < screenSize.h / elemHei) ? screenSize.w / elemWid  : screenSize.h / elemHei;
panzoomObj.zoomAbs(0, 0, initalZoom);
panzoomObj.moveTo((screenSize.w - elemWid * initalZoom) / 2, (screenSize.h - elemHei * initalZoom) / 2);

It works well.
but I want to know Is there a way to make this code more efficient, or is there an internal method?

[Arnaud de Surirey]

I found this:

panzoom/index.d.ts

Line 39 in 87eac07

 autocenter?: boolean; 

but it does not work as well as your snippet.