Run results for: slice vs splice for react setstate

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

New Array + Splice

2K/s

Slice

97/s

View exact numbers

Test name	Executions per second
✓ New Array + Splice	2,303 Ops/sec
Slice	97 Ops/sec

HTML Preparation code:

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

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();
}

const list = [];
for (var i = 0; i < 1e6; i++) {
  list.push(i);
}

Tests:

Slice
/*When writing async/deferred tests, use `deferred.resolve()` to mark test as done*/ return [...list.slice(0, 1781), ...list.slice(1783)];
New Array + Splice
const temp = [...list]; temp.splice(1782, 1); return temp;