Run results for: React Memo or No Memo

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser: Chrome 119

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Memo

11K/s

No Memo

11K/s

View exact numbers

Test name	Executions per second
✓ Memo	11,001 Ops/sec
No Memo	10,731 Ops/sec

HTML Preparation code:

<div id="root"></div>

<script src="https://unpkg.com/react@16/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.15/lodash.min.js"></script>

Script Preparation code:

function Memo(props) {
  const handler = React.useMemo(() => {
      return _.debounce(props.handler, props.wait);
  }, [props.handler, props.wait]);
  return React.createElement("div", { className: handler() });
}

function NoMemo(props) {
  const handler = _.debounce(props.handler, props.wait);
  return React.createElement("div", { className: handler() });
}

var propCases = [{
  handler: function() { return Math.random(); },
  wait: 100
}, {
  handler: function() { return Math.random(); },
  wait: 200
}];
propCases.push(propCases[1]);

Tests:

Memo
propCases.forEach((props, i) => { ReactDOM.render(React.createElement(Memo, props, null), root); });
No Memo
propCases.forEach((props) => { ReactDOM.render(React.createElement(NoMemo, props, null), root); });