unit-vh-vw-overflow-scroll-ref-iframe.html (1183B)
1 <style> 2 body { overflow: scroll } 3 div { 4 width: 10px; 5 height: 10px; 6 background-color: #d64203; 7 } 8 </style> 9 10 <body> 11 <div id="a"></div> 12 <div id="b"></div> 13 <div id="c"></div> 14 <div id="d"></div> 15 16 <!-- 17 Ensure that the scroller positioned the same way as it would be in the 18 'overflow: auto' case. We'll have scrollbars either way, but we don't 19 want the '!=' reftest to spuriously succeed because of the scrollers. 20 --> 21 <div style="width: 500px; height: 500px; background-color: black"> 22 </body> 23 24 <script> 25 // client{Width, Height} consist of the area _inside_ the scrollbars, so these 26 // manually calculated units reflect the fact that with 'overflow: scroll' set, 27 // viewport units are sized taking the scrollbars into account. 28 var vw = 0.01 * document.body.clientWidth; 29 var vh = 0.01 * document.body.clientHeight; 30 var vmin = Math.min(vw, vh); 31 var vmax = Math.max(vw, vh); 32 document.getElementById('a').style.width = (50 * vw) + "px"; 33 document.getElementById('b').style.height = (25 * vh) + "px"; 34 document.getElementById('c').style.width = (35 * vmin) + "px"; 35 document.getElementById('d').style.height = (25 * vmax) + "px"; 36 </script>