How do I increase the font size based on the window width?

Question

I am creating a web-based app that will be displayed on television and other large monitors. I am wanting a quick and easy way to increase the font size to fit the window si

Answer 1

Beejamin's answer worked as expected, I added a set timeout so it would scale in real time. It doesn't reverse scale though.

$(document).ready(function() {scaleFont();});

    function scaleFont() {

      var viewPortWidth = $(window).width();

      if (viewPortWidth > 1900) {$('body').addClass('extraWide')}
      else if (viewPortWidth > 1400) {$('body').addClass('wide')}
      else if (viewPortWidth > 1000) {$('body').addClass('standard')}
      else if (viewPortWidth > 700) {$('body').addClass('narrow')}
      else {$('body').addClass('extraNarrow')}

      setTimeout(scaleFont, 100); 
    }

EDIT: SOLVED REVERSE EFFECT

$(document).ready(function() {scaleFont();});

    function scaleFont() {

      var viewPortWidth = $(window).width();

      if (viewPortWidth >= 1900) {$('body').addClass('extraWide').removeClass('wide, standard, narrow, extraNarrow')}
      else if (viewPortWidth >= 1400) {$('body').addClass('wide').removeClass('extraWide, standard, narrow, extraNarrow')}
      else if (viewPortWidth >= 1000) {$('body').addClass('standard').removeClass('extraWide, wide, narrow, extraNarrow')}
      else if (viewPortWidth >= 700) {$('body').addClass('narrow').removeClass('extraWide, standard, wide, extraNarrow')}
      else {$('body').addClass('extraNarrow').removeClass('extraWide, standard, wide, narrow')}


      setTimeout(scaleFont, 100); 
    }