1<!doctype html> 2<html> 3<head> 4<script src="../resources/runner.js"></script> 5</head> 6<body><iframe></iframe> 7</body> 8<script> 9function setup() { 10 var frame = document.getElementsByTagName("iframe")[0]; 11 var testDoc = frame.contentDocument; 12 testDoc.body.innerHTML = "<head></head><body><div id='sandbox'></div></body>"; 13 return testDoc; 14} 15 16PerfTestRunner.measureTime({run:function() { 17 var testDoc = setup(); 18 var start = PerfTestRunner.now(); 19 var sandbox = testDoc.getElementById('sandbox'); 20 var templateA = testDoc.getElementById('templateA'); 21 var templateB = testDoc.getElementById('templateB'); 22 for (var i = 0; i < 100; i++) { 23 var elementA = testDoc.createElement("div"); 24 var shadowRootForA = elementA.createShadowRoot(); 25 shadowRootForA.innerHTML = "<style>@host{:scope{display:block}}ul.canaryisdev li:nth-of-type(4)::after{content:'canary/dev'}ul.canaryisdev li:nth-of-type(5)::after{content:'beta'}ul.canaryisdev li:nth-of-type(6)::after{content:'stable'}ul.canaryisdev li:nth-of-type(7)::after{content:''}ul.betaisdev li:nth-of-type(4)::after{content:'canary'}ul.betaisdev li:nth-of-type(5)::after{content:'dev/beta'}ul.betaisdev li:nth-of-type(6)::after{content:'stable'}ul.betaisdev li:nth-of-type(7)::after{content:''}ul li{cursor:pointer;padding:3px 0}ul li::before{-webkit-transition:all 500ms ease;-moz-transition:all 500ms ease;-o-transition:all 500ms ease;transition:all 500ms ease;content:'';margin-right:5px;border-left:3px solid transparent}ul li::after{font-size:75%;margin-left:10px}ul li:first-of-type,ul li:nth-of-type(2),ul li:nth-of-type(3){font-size:75%;font-style:italic}ul li:nth-of-type(3){border-bottom:1px solid #d4d4d4;padding-bottom:10px;margin-bottom:5px}ul li:nth-of-type(4)::after{content:'canary'}ul li:nth-of-type(5)::after{content:'dev'}ul li:nth-of-type(6)::after{content:'beta'}ul li:nth-of-type(7)::after{content:'stable'}ul li[selected]{font-weight:600;color:#366597}ul li[selected]::before{border-color:#366597}</style><div>A</div>"; 26 sandbox.appendChild(elementA); 27 28 var elementB = testDoc.createElement("div"); 29 var shadowRootForB = elementB.createShadowRoot(); 30 shadowRootForB.innerHTML = "<style>@host{:scope{display:block;padding:1px}}.milestone-marker{text-align:right;text-transform:uppercase;margin-top:10px;font-weight:600;font-size:14px;color:#366597}@media only screen and (max-width: 700px){[data-first-of-milestone]:after{font-size:12px;font-weight:normal;top:-22px;opacity:1;text-transform:uppercase}}</style><div>B</div>"; 31 sandbox.appendChild(elementB); 32 } 33 return PerfTestRunner.now() - start; 34}}); 35</script> 36</html> 37