Since you have tagged in jquery also (though written only js in the question title) I would add this answer
You can add the following css to a webpage to zoom a browser window
body {
-moz-transform: scale(0.8, 0.8);
zoom: 0.8;
zoom: 80%;
}
So your jquery becomes
$(document).ready(function(){
$('body').css('zoom','80%'); /* Webkit browsers */
$('body').css('zoom','0.8'); /* Other non-webkit browsers */
$('body').css('-moz-transform',scale(0.8, 0.8)); /* Moz-browsers */
});
Dont worry about any cross-browser since any incomprehensible css property would be avoided by the browser.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…