javascript page zoom

Question

Hi i develop my web site and i want to make two buttons (+ and -) with functions of ctr+ and ctr- for zoom in and zoom out of whole web page in all browsers. I need javascript code for this purpose Can anybody help?

Answer 1

I hope this helps you ! This will zoom the entire body tag

var currentZoom = 100;
function zoom(paramvar)
{
  currentZoom += paramvar;
  document.body.style.zoom =  currentZoom + "%" 
}

<button onclick="zoom(+10);">Zoom In</button>
<button onclick="zoom(-10);">Zoom Out</button>