Run results for: 12121212212

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.71 Safari/537.36

Browser: Chrome 94

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
12	334211.2 Ops/sec
13	337223.6 Ops/sec

Tests:

12

let params = {a: undefined, b: null, c: false, d: 'a', e: 1};
Object.keys(params).reduce((urlParams, key) => {
            if (params[key] === undefined) return urlParams;

            return `${urlParams}${key}=${encodeURIComponent(String(params[key]))}&`;
        }, '?').slice(0, -1);

​x
 
let params = {a: undefined, b: null, c: false, d: 'a', e: 1};Object.keys(params).reduce((urlParams, key) => {            if (params[key] === undefined) return urlParams;​            return `${urlParams}${key}=${encodeURIComponent(String(params[key]))}&`;        }, '?').slice(0, -1);                

13

let params = {a: undefined, b: null, c: false, d: 'a', e: 1};
Object.keys(params).reduce((urlParams, key) => {
            if (params[key] === undefined) return urlParams;

            return `${urlParams}${urlParams !== '' ? '&' : '?'}${key}=${encodeURIComponent(String(params[key]))}`;
        }, '');

 
let params = {a: undefined, b: null, c: false, d: 'a', e: 1};Object.keys(params).reduce((urlParams, key) => {            if (params[key] === undefined) return urlParams;​            return `${urlParams}${urlParams !== '' ? '&' : '?'}${key}=${encodeURIComponent(String(params[key]))}`;        }, '');