Run results for: Looping With Stuff

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36

Browser: Chrome 118

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
✓ For	492 Ops/sec
Forof	90 Ops/sec
ForEach	59 Ops/sec

Script Preparation code:

// Generate a large dataset (1 million numbers)
const largeDataset = Array.from({ length: 1_000_000 }, (_, i) => i + 1);

// Function using for...of loop
function testForOfLoop(arr) {
    console.time("for...of loop");
    let sum = 0;
    for (const num of arr) {
        if (num === 500_000) continue; // Skip 500,000
        if (num === 900_000) break; // Stop at 900,000
        sum += num;
    }
    console.timeEnd("for...of loop");
    return sum;
}

// Function using forEach loop
function testForEachLoop(arr) {
    console.time("forEach loop");
    let sum = 0;
    arr.forEach((num) => {
        if (num === 500_000) return; // Doesn't break out
        if (num === 900_000) return; // Still loops
        sum += num;
    });
    console.timeEnd("forEach loop");
    return sum;
}

// Function using for loop
function testForLoop(arr) {
    console.time("for loop");
    let sum = 0;
    for (let i = 0; i < arr.length; i++) {
        if (arr[i] === 500_000) continue; // Skip 500,000
        if (arr[i] === 900_000) break; // Stop at 900,000
        sum += arr[i];
    }
    console.timeEnd("for loop");
    return sum;
}

Run results for: Looping With Stuff

Loop some stuff haha

Forof

ForEach

For