Run results for: reduceArrayOfObject

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36

Browser: Chrome 132

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

reduceArrayOfObjectOld

194K/s

reduceArrayOfObjectNew

173K/s

View exact numbers

Test name	Executions per second
✓ reduceArrayOfObjectOld	194,088 Ops/sec
reduceArrayOfObjectNew	172,916 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

const reduceArrayOfObjectOld = (list, key) => {
    if (!list) {
        throw new Error(`Empty list`);
    }
    if (!key) {
        throw new Error(`Empty key`);
    }
    const len = list.length;
    const result = new Array(len);
    for (let index = 0; index < len; index++) {
        result[index] = list[index][key];
    }
    return result;
};
const reduceArrayOfObjectNew = (list, key) => {
    if (!list) {
        throw new Error(`Empty list`);
    }
    if (!key) {
        throw new Error(`Empty key`);
    }
    const len = list.length;
    const result = new Array(len);
    let index = 0;
    for (; index < len; index++) {
        result[index] = list[index][key];
    }
    return result;
};

const DATA = new Array(1000).fill({a: 1});

Tests:

reduceArrayOfObjectOld
reduceArrayOfObjectOld(DATA, 'a')
reduceArrayOfObjectNew
reduceArrayOfObjectNew(DATA, 'a')