js number with four decimal places

var myNumber=12.2345;
var myNumberWithTwoDecimalPlaces=parseFloat(myNumber).toFixed(2); //12.23

(3.141596).toFixed(2);	// 3.14

var myNumber = 2;

myNumber.toFixed(2); //returns "2.00"
myNumber.toFixed(1); //returns "2.0"

(Math.round(num * 100) / 100).toFixed(2);

decimal.toFixed();
// return 6

decimal.toFixed(2)
// returns 5.68

decimal.toFixed(1)
// return 5.7

const removedDecimal = Math.round(decimal);
// returns 5

const removedDecimal = Math.trunc(decimal);
// returns 5