if('home' in window) { alert('home in window') }
else { alert('home is not in window') }
window.home = true;
if('home' in window) { alert('home in window') }
else { alert('home is not in window') }
if(window.home) { alert('home in window') }
else { alert('home is not in window') }
window.home = true;
if(window.home) { alert('home in window') }
else { alert('home is not in window') }
if(typeof home != 'undefined') { alert('home in window') }
else { alert('home is not in window') }
window.home = true;
if(typeof home != 'undefined') { alert('home in window') }
else { alert('home is not in window') }