MeasureThat.net

Run results for: Spread vs object.assing vs forEach pt4

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Run details:
Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Mobile/15E148 Safari/604.1
Mobile Safari 17
iOS 17.0
Mobile
one year ago
Test name Executions per second
Spread 1397394.9 Ops/sec
Object.assign 2380346.5 Ops/sec
Foreach 2271430.2 Ops/sec
just for 6748000.0 Ops/sec
Tests:

  • Spread

    ​x
     
    const a = {
        email: "abc@mail.com",
        phone: "12345678",
    };
    ​
    const b = {
        app_version: "AP.12",
        appsflyer_id: "askldjajkshdlkjh2323h4234j2l3j4h",
        advertising_id: "23;o4h2l34hl2kj3h4kj23h4",
        device_os_version: "12",
        device_name: "Aifon 15 PRO",
        firebase_instance_id: "2liu3hiuo23y4u23y4ui2y34iy3u4y234",
    };
    ​
    const c = {
      first_name: "lalala",
      last_name: "dadada"
    };
    ​
    let res = {
        email: null,
        phone: null,
        last_name: null,
        first_name: null,
        app_version: null,
        appsflyer_id: null,
        advertising_id: null,
        device_os_version: null,
        device_name: null,
        firebase_instance_id: null,
        ...a
    };
      
    res = {
          email: null,
        phone: null,
        last_name: null,
        first_name: null,
        app_version: null,
        appsflyer_id: null,
        advertising_id: null,
        device_os_version: null,
        device_name: null,
        firebase_instance_id: null,
        ...res,
        ...b
    };
    ​
    res = {
        email: null,
        phone: null,
        last_name: null,
        first_name: null,
        app_version: null,
        appsflyer_id: null,
        advertising_id: null,
        device_os_version: null,
        device_name: null,
        firebase_instance_id: null,
        ...res,
        ...c
    }

  • Object.assign

     
    const a = {
        email: "abc@mail.com",
        phone: "12345678",
    };
    ​
    const b = {
        app_version: "AP.12",
        appsflyer_id: "askldjajkshdlkjh2323h4234j2l3j4h",
        advertising_id: "23;o4h2l34hl2kj3h4kj23h4",
        device_os_version: "12",
        device_name: "Aifon 15 PRO",
        firebase_instance_id: "2liu3hiuo23y4u23y4ui2y34iy3u4y234",
    };
    ​
    const c = {
      first_name: "lalala",
      last_name: "dadada"
    };
    ​
    let res = {
        email: null,
        phone: null,
        last_name: null,
        first_name: null,
        app_version: null,
        appsflyer_id: null,
        advertising_id: null,
        device_os_version: null,
        device_name: null,
        firebase_instance_id: null,
        ...a
    };
                              
    Object.assign(res, b);
    Object.assign(res, c);

  • Foreach

     
    const a = {
          email: "abc@mail.com",
          phone: "12345678",
    };
    ​
    const b = {
        app_version: "AP.12",
        appsflyer_id: "askldjajkshdlkjh2323h4234j2l3j4h",
        advertising_id: "23;o4h2l34hl2kj3h4kj23h4",
        device_os_version: "12",
        device_name: "Aifon 15 PRO",
        firebase_instance_id: "2liu3hiuo23y4u23y4ui2y34iy3u4y234",
    };
    ​
    const c = {
      first_name: "lalala",
      last_name: "dadada"
    };
    ​
    const res = {
          email: null,
          phone: null,
          last_name: null,
          first_name: null,
          app_version: null,
          appsflyer_id: null,
          advertising_id: null,
          device_os_version: null,
          device_name: null,
          firebase_instance_id: null,
          ...a
    };
    ​
    Object.keys(b).forEach(key => {
        res[key] = b[key];
      });
    Object.keys(c).forEach(key => {
        res[key] = c[key];
      });

  • just for

     
    const a = {
          email: "abc@mail.com",
          phone: "12345678",
    };
    ​
    const b = {
        app_version: "AP.12",
        appsflyer_id: "askldjajkshdlkjh2323h4234j2l3j4h",
        advertising_id: "23;o4h2l34hl2kj3h4kj23h4",
        device_os_version: "12",
        device_name: "Aifon 15 PRO",
        firebase_instance_id: "2liu3hiuo23y4u23y4ui2y34iy3u4y234",
    };
    ​
    const c = {
      first_name: "lalala",
      last_name: "dadada"
    };
    ​
    const res = {
          email: null,
          phone: null,
          last_name: null,
          first_name: null,
          app_version: null,
          appsflyer_id: null,
          advertising_id: null,
          device_os_version: null,
          device_name: null,
          firebase_instance_id: null,
          ...a
    };
    ​
    for (const key in b) {
        res[key] = b[key];
    }
    ​
    for (const key in c) {
        res[key] = c[key];
    }