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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:143.0) Gecko/20100101 Firefox/143.0

Browser: Firefox 143

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 9 months ago

filter

17.1M/s

filter(!!item)

8.6M/s

filter(boolean)

5.9M/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)