Run results for: Is string empty

Test name	Executions per second
✓ not boolean	217,548,944 Ops/sec
not length	194,196,624 Ops/sec
not string	194,136,624 Ops/sec
length is 0	191,973,664 Ops/sec
string soft equals empty string	188,290,368 Ops/sec
string equals empty string	167,035,392 Ops/sec
length soft equals 0	101,618,248 Ops/sec

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