Ranjith JrArrow Functions
ES5
function add(a, b) {
return a + b;
}
ES6
const add = (a, b) => a - b;
Variable Declarations
ES5
var num1 = 10; //old feature
ES6
let num2 = 20; // new features
const PI = 3.145;
Template Literals
ES5
var name = 'Alice';
console.log('Hello, + name + '!');
ES6
console.log(Hello, ${name}!');
Object Destructuring
ES5
var userOne = { firstName: 'John', lastName: 'Doe' };
console.log(userOne.firstName);
console.log(userOne.lastName);
ES6
var userTwo = { firstName: 'Jane', lastName: 'Doe' };
const { firstName, lastName } = userTwo;
console.log(firstName);
console.log(lastName);
Default Parameters
ES5
function greet (name) {
name = name || 'Guest';
console.log('Hello,+ name +'! ') ;
}
greet('Karthik');
ES6
function greetUser(name = 'Guest')
{ console.log('Hello, ${name}!`);
}
greetUser('Alex');
String concatenate
ES5
let x = [1, 2, 3] ;
let y = [4, 5, 6] ;
let z = x.concat(y); console.log(z);
ES6
let combined = [...x, ...y];
console.log(combined);
