math-shorthand.js

// Recap 

var price1 = 31;
var price2 = 10;

var sum = price1 + price2;

var difference = price1 - price2;

var differenceReverse = price2 - price1;

var multiplication = price1 * price2;

var division = price1 / price2;


// console.log(sum);
// console.log(difference);
// console.log(differenceReverse);
// console.log(multiplication);
// console.log(division);


// Now new file starting

var doublePrice = price2 * 20;
// var newPrice = price1 + 10;
// var price1 = price1 + 20;

//if we declare a variable before, then again we don't need to declare "var", we just need to declare the name of the variable for multiple time uses

// price1 = price1 + 24

/* 
we can alternatively add value to the past variable such as: price1 = price1 + 24; and price1 += 24; are the same thing means. 
*/

price1 += 44; // shorthand

// price2 = price2 - 2;
price2 -= 2; // shorthand


// console.log(newPrice);
// console.log(price1);
// console.log(price2);

var age = 21;
// age = age + 1;

// age += 1; //shorthand

// If you want to increase the value of a variable by 1 and gradually..then set the following style
age++;
// console.log(age);

var love = 100;
// love = love - 1;
// love -= 1;
love--;

console.log(love);