CSS - Scale (Zoom Factor)

1 - About

Scale is the zoom level of a page is first loaded.

When the zooming factor is exactly 100%, one CSS pixel equals one device pixel.

3 - Management

3.1 - Default

The scale when the page is loaded is defined by the viewport meta tag

3.2 - Maximum, minimum

The maximum-scale, minimum-scale, and user-scalable properties are defined by the viewport meta tag

3.3 - Calculation

You can calculate that factor by dividing screen.width by window.innerWidth


onResize = function () {
     zoomFactor=window.innerWidth/screen.width; 
     console.log("The Zooming factor is "+zoomFactor);
}
onResize();

window.onresize = function () {
     zoomFactor=window.innerWidth/screen.width; 
     console.log("The Zooming factor is "+zoomFactor);
}



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