<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=804970 --> <head> <title>Test for dynamic changes to CSS 'vh', 'vw', 'vmin', and 'vmax' units</title> <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> </head> <body> <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=804970">Mozilla Bug 804970</a> <iframe id="iframe" src="viewport_units_iframe.html"></iframe> <pre id="test"> <script type="application/javascript"> /** Test for CSS vh/vw/vmin/vmax units **/ function px_to_num(str) { return Number(String(str).match(/^([\d.]+)px$/)[1]); } function width(elt) { return px_to_num(elt.ownerDocument.defaultView.getComputedStyle(elt, "").width); } SimpleTest.waitForExplicitFinish(); function run() { var iframe = document.getElementById("iframe"); var idoc = iframe.contentDocument; var vh = idoc.getElementById("vh"); var vw = idoc.getElementById("vw"); var vmin = idoc.getElementById("vmin"); var vmax = idoc.getElementById("vmax"); iframe.style.width = "100px"; iframe.style.height = "250px"; is(width(vh), 250, "vh should be 250px"); is(width(vw), 100, "vw should be 100px"); is(width(vmin), 100, "vmin should be 100px"); is(width(vmax), 250, "vmax should be 250px"); iframe.style.width = "300px"; is(width(vh), 250, "vh should be 250px"); is(width(vw), 300, "vw should be 300px"); is(width(vmin), 250, "vmin should be 250px"); is(width(vmax), 300, "vmax should be 300px"); iframe.style.height = "200px"; is(width(vh), 200, "vh should be 200px"); is(width(vw), 300, "vw should be 300px"); is(width(vmin), 200, "vmin should be 200px"); is(width(vmax), 300, "vmax should be 300px"); SimpleTest.finish(); } window.addEventListener("load", run, false); </script> </pre> </body> </html>