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Run results for:
JSON vs raw string
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36
Browser:
Chrome 133
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
Parsing JSON and mapping to string
2171773.5 Ops/sec
Doing the string addition upstream
149745088.0 Ops/sec
Script Preparation code:
const metadata = { FieldA: 'ValueForA', PropertyB: 'BasWell', AnotherC: 'ParamC', AndaD: 'ValueD', AlsoE: 'ValueForE' } var paramsJson = JSON.stringify(metadata); var paramsStr = ''; for (const [key, value] of Object.entries(metadata)) { paramsStr += `&${key}=${value}` }
Tests:
Parsing JSON and mapping to string
let src = 'https://baseurl.com/script.js?data=value'; const parsed = JSON.parse(paramsJson) for (const [key, value] of Object.entries(parsed)) { src += `&${key}=${value}` }
Doing the string addition upstream
let src = 'https://baseurl.com/script.js?data=value'; src += paramsStr