Run results for: Is string empty

Test name	Executions per second
✓ length soft equals 0	244,550,032 Ops/sec
string equals empty string	237,440,144 Ops/sec
not length	235,743,184 Ops/sec
length is 0	228,810,224 Ops/sec
string soft equals empty string	228,026,368 Ops/sec
not string	227,150,784 Ops/sec
not boolean	11,749,021 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