1 <!DOCTYPE html> 2 <html> 3 <head> 4 <script type="text/javascript" src="../resources/runner.js"></script> 5 </head> 6 <body> 7 <script> 8 function appendBranchWithDepth(depth) 9 { 10 var node = document.body; 11 while (depth) { 12 var child = document.createElement('div'); 13 node.appendChild(child); 14 node = child; 15 depth--; 16 } 17 return node; 18 } 19 20 function appendChildren(root, childCount) 21 { 22 while (childCount) { 23 root.appendChild(document.createElement('div')); 24 childCount--; 25 } 26 } 27 28 // This makes a tree of depth 50 with 500 leaves. 29 var tipOfBranch = appendBranchWithDepth(50); 30 appendChildren(tipOfBranch, 500); 31 var customEvent = new Event('foo'); 32 33 function run() 34 { 35 for (var node = tipOfBranch.firstChild; node; node = node.nextSibling) 36 node.dispatchEvent(customEvent); 37 } 38 39 PerfTestRunner.measureRunsPerSecond({ 40 description: "Measure events dispatching", 41 run: run 42 }); 43 </script> 44 </body> 45 </html> 46
