Benchmark: setting localStorage

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

//constant
window.itemOptions = {
	'1': '1',
  	'2': '2',
  	'3': '3',
  	'4': '4',
};

//example object
window.stateObject = {
	item1: '00000',
  	item2: '50',
  	item3: [],
  	item4: [window.itemOptions['1']],
  	item5: [],
};

localStorage.setItem('stateObject', JSON.stringify(window.stateObject));

Tests:

setting localStorage unconditionally (simulating 1 React rerender after mount)
localStorage.setItem('stateObject', JSON.stringify(window.stateObject)); localStorage.setItem('stateObject', JSON.stringify(window.stateObject));
setting localStorage conditionally (simulating 1 React rerender after mount)
const storedState = JSON.parse(localStorage.getItem('stateObject')); if (!_.isEqual(window.stateObject, storedState)) { localStorage.setItem('stateObject', JSON.stringify(window.stateObject)); } if (!_.isEqual(window.stateObject, storedState)) { localStorage.setItem('stateObject', JSON.stringify(window.stateObject)); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
setting localStorage unconditionally (simulating 1 React rerender after mount)
setting localStorage conditionally (simulating 1 React rerender after mount)

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36

Browser/OS: Chrome 111 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
setting localStorage unconditionally (simulating 1 React rerender after mount)	129538.6 Ops/sec
setting localStorage conditionally (simulating 1 React rerender after mount)	448567.1 Ops/sec

setting localStorage (version: 0)

testing efficiency of setting localStorage with and without conditional deep equals check

Comparing performance of: setting localStorage unconditionally (simulating 1 React rerender after mount) vs setting localStorage conditionally (simulating 1 React rerender after mount)

Created: one year ago by: Guest

Jump to the latest result

setting localStorage unconditionally (simulating 1 React rerender after mount)

setting localStorage conditionally (simulating 1 React rerender after mount)

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A