Data types in javascript

5 primitive data types in Javascript:

• String

  copy
  let name = "tom"

• Number

  copy
  let num = 1;
  let sum = 2.2
• Boolean

  copy
  let isEvenNumber = true
  let isOddNumber = false

• Undefined

  copy
  let name;
  console.log(name)   // undefined

  By default undefined is assigned to 'let' and 'var'.

• Null
  copy

  let name = null;

Two non primitive data types are:

• Object

  copy
  let obj = { name: 'tom', age: 5}

• Array
  copy

  let names = ['tom', 'jerry']