round int to 2 decimal places javascript code example

Example 1: javascript round decimal 2 digits

var numb = 123.23454;
numb = numb.toFixed(2);

Example 2: javascript round to 2 decimal

var subTotal="12.1345";// can also be int, float, string
var subTotalFormatted=parseFloat(subTotal).toFixed(2); //"12.13"

//#2
function round(value, precision) {
    var multiplier = Math.pow(10, precision || 0);
    return Math.round(value * multiplier) / multiplier;
}

//#3
var number = 12.3456789;
var rounded = Math.round( number * 10 ) / 10;
// rounded is 12.3

//#4
var numb = 123.23454;
numb = numb.toFixed(2);

//#5
var num = 5.56789;
var n = num.toFixed(2);

//#6
var num = 2;
var roundedString = num.toFixed(2);// 2.00

//#7
let num = 12.5452411;
num = num.toFixed(3); // 12.545

//#8
function round(num, places) {
    num = parseFloat(num);
    places = (places ? parseInt(places, 10) : 0)
    if (places > 0) {
        let length = places;
        places = "1";
        for (let i = 0; i < length; i++) {
            places += "0";
            places = parseInt(places, 10);
        }
    } else {
        places = 1;
    }
    return Math.round((num + Number.EPSILON) * (1 * places)) / (1 * places)
}

round(1.005, 2); // 1.01
round(1.005, "1"); // 1
round("1.23", 1); // 1.2
round("1.436", "2"); // 1.44

//#9
myNumber.toFixed(7);

//#10 PHP
round(12345.6789, 2) // 12345.68
round(12345.6789, 1) // 12345.7

//#11
Math.round((num + Number.EPSILON) * 100) / 100

//#12
Math.round(3.14159)  // 3
Math.round(3.5)      // 4
Math.floor(3.8)      // 3
Math.ceil(3.2)       // 4