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Run results for:
FormData conversion: Object.fromEntries vs for loop
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=617024" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36
Browser:
Chrome 139
Operating system:
Windows
Device Platform:
Desktop
Date tested:
9 months ago
Test name
Executions per second
Object.fromEntries
393402.5 Ops/sec
for of loop
456587.6 Ops/sec
forEach
306470.8 Ops/sec
for of loop + array support
400368.0 Ops/sec
HTML Preparation code:
<!--your preparation HTML code goes here-->
Script Preparation code:
/*your preparation JavaScript code goes here To execute async code during the script preparation, wrap it as function globalMeasureThatScriptPrepareFunction, example:*/ async function globalMeasureThatScriptPrepareFunction() { // This function is optional, feel free to remove it. // await someThing(); }
Tests:
Object.fromEntries
const formData = new FormData(); formData.append("x", "1"); formData.append("x", "2"); formData.append("x", "3"); formData.append("x", "4"); formData.append("y", "1"); formData.append("z", "1"); const object = Object.fromEntries(formData);
for of loop
const formData = new FormData(); formData.append("x", "1"); formData.append("x", "2"); formData.append("x", "3"); formData.append("x", "4"); formData.append("y", "1"); formData.append("z", "1"); const object = {}; for(const entry of formData){ object[entry[0]] = entry[1]; }
forEach
const formData = new FormData(); formData.append("x", "1"); formData.append("x", "2"); formData.append("x", "3"); formData.append("x", "4"); formData.append("y", "1"); formData.append("z", "1"); const object = {}; formData.forEach((value, key) => object[key] = value);
for of loop + array support
const formData = new FormData(); formData.append("x", "1"); formData.append("x", "2"); formData.append("x", "3"); formData.append("x", "4"); formData.append("y", "1"); formData.append("z", "1"); const object = {}; for(const [key, value] of formData){ if(typeof object[key] !== "undefined"){ if(Array.isArray(object[key])){ object[key].push(value) } else { object[key] = [object[key], value] } } else { object[key] = value; } }