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ie11-custom-properties

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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>CSS Custom Properties IE11 Test</title> <script>window.MSInputMethodContext && document.documentMode && document.write('<script src="../ie11CustomProperties.js"><\x2fscript>');</script> <body> <a href="https://github.com/nuxodin/ie11CustomProperties" style="flex-basis:100%; max-width:none; padding:.5em">back to project</a> <style> html { --root-green:green; --root-red:red; } body { --body-green:green; --body-red:red; } #tests > * { border:1px solid black; padding:10px; } </style> <div id=tests> </div> <script> 'use strict'; setTimeout(function(){ var html = '<div id=noVars>'; html += '<h2>no vars</h2>'; html += '<style>.noVars {color:green}</style>'; for (var i=0; i<1000;i++) { html += '<span class="noVars">x </span>'; } html += '<span class="noVars last">x </span>'; html += '</div>'; var zeit0 = performance.now(); tests.insertAdjacentHTML('beforeend', html); requestAnimationFrame(function check(){ var last = document.getElementById('noVars').querySelector('.last'); var computed = getComputedStyle(last).getPropertyValue('color') !== 'rgb(0, 0, 0)'; if (computed) { var zeit1 = performance.now(); last.innerHTML = "Duration " + (zeit1 - zeit0) + " ms."; } else { requestAnimationFrame(check); } }) }, 1000) setTimeout(function(){ var html = '<div id=gettingRootVars>'; html += '<h2>getting root vars</h2>'; html += '<style>.rootGetter {color:var(--root-green)}</style>'; for (var i=0; i<1000;i++) { html += '<span class="rootGetter">x </span>'; } html += '<span class="rootGetter last">x </span>'; html += '</div>'; var zeit0 = performance.now(); tests.insertAdjacentHTML('beforeend', html); requestAnimationFrame(function check(){ var last = document.getElementById('gettingRootVars').querySelector('.last'); var computed = getComputedStyle(last).getPropertyValue('color') !== 'rgb(0, 0, 0)'; if (computed) { var zeit1 = performance.now(); last.innerHTML = "Duration " + (zeit1 - zeit0) + " ms."; } else { requestAnimationFrame(check); } }) }, 2000) setTimeout(function(){ var html = '<div id=nonRoot>'; html += '<h2>getting non-root vars</h2>'; html += '<style>.non-root {color:var(--body-green)}</style>'; for (var i=0; i<1000;i++) { html += '<span class="non-root">x </span>'; } html += '<span class="non-root last">x </span>'; html += '</div>'; var zeit0 = performance.now(); tests.insertAdjacentHTML('beforeend', html); requestAnimationFrame(function check(){ var last = document.getElementById('nonRoot').querySelector('.last'); var computed = getComputedStyle(last).getPropertyValue('color') !== 'rgb(0, 0, 0)'; if (computed) { var zeit1 = performance.now(); last.innerHTML = "Duration " + (zeit1 - zeit0) + " ms."; } else { requestAnimationFrame(check); } }) }, 3000) </script>