this keyword in javascript arrow function code example

Example 1: javascript arrow function

// Non Arrow (standard way)
let add = function(x,y) {
  return x + y;
}
console.log(add(10,20)); // 30

// Arrow style
let add = (x,y) => x + y;
console.log(add(10,20)); // 30;

// You can still encapsulate
let add = (x, y) => { return x + y; };

Example 2: arrow function javascript

//If body has single statement
let myFunction = (arg1, arg2, ...argN) => expression

//for multiple statement
let myFunction = (arg1, arg2, ...argN) => {
    statement(s)
}
//example
let hello = (arg1,arg2) => "Hello " + arg1 + " Welcome To "+ arg2;
console.log(hello("User","Grepper"))
//Start checking js code on chrome inspect option

Example 3: arrow function javascript

// Traditional Function
function (param) {
  var a = param * 3;
  return a;
}

//Arrow Function
(a, b) => {
  let c = (a * b) + 3;
  return c;
}

Example 4: arrow function javascript

params => ({foo: "a"}) // returning the object {foo: "a"}

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