Deze code is compatibel met meerdere browsers en controleert de afmetingen van de viewport, de schermresolutie en de muispositie, wat erg handig kan zijn om enkele controles met JavaScript uit te voeren.
function getViewportWidth() ( if (window.innerWidth) ( return window.innerWidth; ) else if (document.body && document.body.offsetWidth) ( return document.body.offsetWidth; ) else ( return 0; ) ) function getViewportHeight() ( if (window.innerHeight) ( return window.innerHeight; ) else if (document.body && document.body.offsetHeight) ( return document.body.offsetHeight; ) else ( return 0; ) ) var tellMeTheSizes=function() ( document.getElementById("viewportwidth").innerHTML = getViewportWidth() + "px"; document.getElementById("viewportheight").innerHTML = getViewportHeight() + "px"; document.getElementById("resolutionheight").innerHTML = screen.height + "px"; document.getElementById("resolutionwidth").innerHTML = screen.width + "px"; ) window.onload=function() ( tellMeTheSizes(); ) window.onresize=function() ( tellMeTheSizes(); ) window.onmousemove=function(event) ( ev = event || window.event; document.getElementById("mousetop").innerHTML = ev.pageY + "px"; document.getElementById("mouseleft").innerHTML = ev.pageX + "px"; )