JAVASCRIPT

js rounding

//There are meny ways of rounding...
Math.floor(5.5) //Answer 5, it alwas rounds down.
Math.round(5.5) //Answer 6, it simpily rounds to the closest whole number.
Math.ceil(5.5) //Answer 6, it alwas rounds up.

//You can do more things too...
Math.floor(5.57 * 10) / 10 //Answer 5.5, the number turns into 55.7, Then gets floored (55.0), Then gets divied, (5.5).

rounders javascript

function solution(n) {
    let num = n.toString().split('');
    let i = num.length - 1;
    while (i > 0) {
        if (num[i] >= 5) {
            num[i - 1] = (parseInt(num[i - 1]) + 1).toString();
        }
        num[i] = '0';
        i--;
    }
    return parseInt(num.join(''));
}

round js

// There are many ways of rounding...
Math.ceil(5.5) // Answer 6, rounds up.
Math.round(5.5) // Answer 6, rounds to the closest whole number.
Math.floor(5.5) // Answer 5, rounds down.

// ceil is short for ceiling(up), floor is down...

math.round()

The Math.round()  function 
returns the value of a number rounded to the nearest integer.

Math.round(x)
// If x = 0.6 it gives you 1; if x = 2.5 it gives you 3; 
// if x=2.49999 it gives you 2.  

Math.round( 20.49); //  20
Math.round( 20.5 ); //  21
Math.round( 42   ); //  42
Math.round(-20.5 ); // -20
Math.round(-20.51); // -21

Javascript round

var myNumber = 33.55;
var output = Math.round(myNumber);
console.log(output)
//Output: 34;

math.round in javascript

let xo =7.45;
xo = Math.round(xo);
// output = 7;

round number Javascript

round(200.3456, 2); // returns 200.35

how to use math.round

//There are meny ways of rounding...
Math.floor(5.5) //Answer 5, it alwas rounds down.
Math.round(5.5) //Answer 6, it simpily rounds to the closest whole number.
Math.ceil(5.5) //Answer 6, it alwas rounds up.

//You can do more things too...
Math.floor(5.57 * 10) / 10 //Answer 5.5, the number turns into 55.7, Then gets floored (55.0), Then gets divied, (5.5)

define math.round() method in javascript

// The Math.round() method rounds a number to the nearest integer. 
// 2.49 will be rounded down (2), and 2.5 will be rounded up (3).

// EXAMPLE: 1
let floating_num = Math.round(2.65);
console.log(floating_num);
// OUTPUT: 3

// EXAMPLE: 2
let floating_num_2 = Math.round(2.45);
console.log(floating_num_2);
// OUTPUT: 2

// EXAMPLE: 3
let floating_num_3 = Math.round(7.50);
console.log(floating_num_3);
// OUTPUT: 8

// EXAMPLE: 4
let floating_num_4 = Math.round(-2.65);
console.log(floating_num_4);
// OUTPUT: -3

// EXAMPLE: 5
let floating_num_5 = Math.round(-2.45);
console.log(floating_num_5);
// OUTPUT: -2

Javascript Math round

var myNumber = 33.55;
var output = Math.random(myNumber);
console.log(output)

javaScript Math.round()

Math.round(4.6);