Run results for: Create new

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:97.0) Gecko/20100101 Firefox/97.0

Browser: Firefox 97

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 years ago

Tests:

Map
let prices = { banana: 1, orange: 2, meat: 4, }; let doublePrices = Object.fromEntries( // convert prices to array, map each key/value pair into another pair // and then fromEntries gives back the object Object.entries(prices).map(entry => [entry[0], entry[1] * 2]) );
Entries with array
let prices = { banana: 1, orange: 2, meat: 4, }; let doublePrices = {} for (const [key, value] of Object.entries(prices)) { doublePrices[key] = value }
Entries no array
let prices = { banana: 1, orange: 2, meat: 4, }; let doublePrices = {} Object.entries(prices).forEach((price) => { doublePrices[price[0]] = price[1] })