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Add nested perf measures example #49

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1 change: 1 addition & 0 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@
<li><a href="many-redirects/index.html">many-redirects</a></li>
<li><a href="minified-with-source-maps/index.html">minified-with-source-maps</a></li>
<li><a href="nested-interactions/index.html">nested-interactions</a></li>
<li><a href="nested-user-timings/index.html">nested-user-timings</a></li>
<li><a href="node-fib-app/index.html">node-fib-app</a></li>
<li><a href="react-hello-world/index.html">react-hello-world</a></li>
<li><a href="scheduler/index.html">scheduler</a></li>
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7 changes: 7 additions & 0 deletions nested-user-timings/README.md
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# user-timings

This example creates some performance measures:

1. `first measure` from 0-200ms
2. `second measure` from 0-600ms
3. `third measure` from 1000-2000ms
56 changes: 56 additions & 0 deletions nested-user-timings/app.js
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function consecutiveNonOverlapping() {
const name = 'ConsecutiveNonOverlapping';
const start = performance.now();

performance.measure(name, {
start: start,
end: start + 500,
});
performance.measure(name, {
start: start + 500,
end: start + 1000,
});
}

function overlappingNonNested() {
const name = 'OverlappingNonNested';
const start = performance.now();

performance.measure(name, {
start: start,
end: start + 500,
});
performance.measure(name, {
start: start + 100,
end: start + 600,
});
}

function overlappingNested() {
const name = 'OverlappingNested';
const start = performance.now();

performance.measure(name, {
start: start,
end: start + 500,
});
performance.measure(name, {
start: start + 100,
end: start + 200,
});
}

setTimeout(() => {
consecutiveNonOverlapping();
}, 100);

setTimeout(() => {
overlappingNonNested();
}, 2000);

setTimeout(() => {
overlappingNested();

const text = document.createTextNode('Finished!');
document.body.appendChild(text);
}, 3000);
9 changes: 9 additions & 0 deletions nested-user-timings/index.html
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<html>
<head>
<title>User Timings</title>
<style></style>
</head>
<body>
<script src="app.js"></script>
</body>
</html>