Benchmark: test for each and for let i

HTML Preparation code:

<!--your preparation HTML code goes here-->
<script src=''></script>

Script Preparation code:

/*your preparation JavaScript code goes here
To execute async code during the script preparation, wrap it as function globalMeasureThatScriptPrepareFunction, example:*/
async function globalMeasureThatScriptPrepareFunction() {
    // This function is optional, feel free to remove it.
    // await someThing();
}

let foo = new Array(10000000);
foo = foo.fill(0).map((x, i) => i + 1); 

function bar1() {
   let sum = 0;
   for (let i = 0; i < 10000000; ++i) {
          sum += foo[i];
   }
   return sum;
}

function bar2() {
    let sum = 0;
    for (let i in foo) {
       sum += foo[i];
   }
   return sum;
}

function bar3() {
    let sum = 0;
    foo.forEach((ele) => sum += ele);
    return sum;
}

Tests:

for let i
/*When writing async/deferred tests, use `deferred.resolve()` to mark test as done*/ bar1()
for in
bar2()
for each
bar3()

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for let i
for in
for each

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 9 days ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36

Browser/OS: Chrome 150 on Linux

View result in a separate tab

for let i

99/s

for each

16/s

for in

4/s

View exact numbers

Test name	Executions per second
✓ for let i	99 Ops/sec
for each	16 Ops/sec
for in	4 Ops/sec

test for each and for let i (version: 1)

test

Comparing performance of: `for let i vs for in vs for each`

Created: 11 days ago by: Guest

Go to the latest result

for let i

for in

for each

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

test for each and for let i (version: 1)

test

Comparing performance of: for let i vs for in vs for each

Created: 11 days ago by: Guest

Go to the latest result

for let i

for in

for each

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `for let i vs for in vs for each`