Run results for: Is string empty

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/105.0.5195.100 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 105

Operating system: iOS 16.0

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
not string	65581136.0 Ops/sec
length is 0	63816492.0 Ops/sec
not length	96377264.0 Ops/sec
string equals empty string	59973340.0 Ops/sec
string soft equals empty string	58599464.0 Ops/sec
not boolean	3027623.0 Ops/sec
length soft equals 0	52791956.0 Ops/sec

Tests:

not string
function isEmpty(string) { return !string; } const text = 'This is an example of a non empty string'; const empty = ''; const test1 = isEmpty(text); const test2 = isEmpty(empty);
length is 0
function isEmpty(string) { return string.length === 0; } const text = 'This is an example of a non empty string'; const empty = ''; const test1 = isEmpty(text); const test2 = isEmpty(empty);
not length
function isEmpty(string) { return !string.length; } const text = 'This is an example of a non empty string'; const empty = ''; const test1 = isEmpty(text); const test2 = isEmpty(empty);
string equals empty string
function isEmpty(string) { return string === ''; } const text = 'This is an example of a non empty string'; const empty = ''; const test1 = isEmpty(text); const test2 = isEmpty(empty);
string soft equals empty string
function isEmpty(string) { return string == ''; } const text = 'This is an example of a non empty string'; const empty = ''; const test1 = isEmpty(text); const test2 = isEmpty(empty);
not boolean
function isEmpty(string) { return !Boolean(string); } const text = 'This is an example of a non empty string'; const empty = ''; const test1 = isEmpty(text); const test2 = isEmpty(empty);
length soft equals 0
function isEmpty(string) { return string.length == 0; } const text = 'This is an example of a non empty string'; const empty = ''; const test1 = isEmpty(text); const test2 = isEmpty(empty);

Run results for: Is string empty

Different ways of checking if string is empty

not string

length is 0

not length

string equals empty string

string soft equals empty string

not boolean

length soft equals 0