tomarpremveer

Eric Elliott's "Composing Software" Series

A collection of links to the excellent "Composing Software" series of medium stories by Eric Elliott.

• The Rise and Fall and Rise of Functional Programming
• Why Learn Functional Programming in JavaScript?
• A Functional Programmer’s Introduction to JavaScript
• Higher Order Functions
• Reduce
• Functors & Categories
• [Composing

tomarpremveer

const obj =   {
  name:"github",
  url:"github.com"
}
//to check if the color property is present on the object or not or it's value is null
if(obj.color === null || obj.color === undefined){ 
  console.log("this propery is not present on the obj")
}

// you can do this like this way

tomarpremveer

null == undefined // true

tomarpremveer

var a = 1
var b = 1

a == b // true
a === b //true