Zoom in & out by javaScript

Question

I want to make the same functionality of "Ctrl +" & "ctrl -" shortcuts.

how can i do this using javascript?

if it is not valid by javascript is there another options?

Thanks in Advance

Answer 1

I don't think you can change the zoom level of the browsers via javascript (at least not reliably on all browsers)

but you can emulate the zoom behavior by changing font sizes using javascript and css