Basic JavaScript

variable = 10;

const variable = 10;

variable := 10;

variable == 10;

10

"55"

Nan

Error

console.print()

log()

print()

console.log()

function = myFunction() {}

function myFunction() {}

let myFunction() {}

function myFunction: {}

10

5

undefined

Error

array = [1, 2, 3];

array(1, 2, 3);

array = {1, 2, 3};

array = (1, 2, 3)

true

false

undefined

Error

object = {name: "John", age: 30}

object(name = "John", age = 30)

object = (name: "John", age: 30)

object = [name: "John", age: 30]

Checks for equality of values and data type

Checks for equality of values and not data types

Assigns a value to a variable

Performs a bitwise OR operation

array.length()

length(array)

array.length

array.getLength()