Run results for: filter vs filter(boolean) vs filter(!!)

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 26

Operating system: iOS 18.7

Device Platform: Mobile

Date tested: 9 months ago

filter(boolean)

20.2M/s

filter

19.6M/s

filter(!!item)

18.0M/s

View exact numbers

HTML Preparation code:

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

Script Preparation code:

var data = [{}, {}, {e:1}, {d: 'ed'}, null, {}, {}, {e: {}}, {e: {r: null}}, undefined, {}, null, null, undefined, {f: null}, null];

Tests:

filter
/*When writing async/deferred tests, use `deferred.resolve()` to mark test as done*/ data.filter(item => item !== null)
filter(boolean)
data.filter(Boolean)
filter(!!item)
data.filter(item => !!item)