minte9

LearnRemember

Exponentiation

 
/**
 * The exponentiation operator a ** b raises a to the power of b
 * Power of 1/2 is the same as square root
 * Power of 1/3 is the same as cubic root
 */

console.log(2 ** 3);    // 8
console.log(4 ** 1/2);  // 2
console.log(8 ** 1/3);  // 2

console.log(2 ^ 3);     // 1 - XOR bitwise
console.log(2 ^ 2);     // 0

console.log(3 % 2);     // 1 - reminder
console.log(8 % 3);     // 2

Unary +

 
/**
 * The unary operator (+) applied to a single value
 * It doesn’t do anything to numbers
 * It converts the string to number
 * 
 * Unary pluses applied to values before the binary ones ...
 * because of their higher precedence
 */

let a = 1;
let b = true;
let x = "2";
let y = "3";

console.log( +a );      // 1
console.log( +b );      // 1
console.log( +x + +y ); // 5