Answers for "how to return a certain number of decimal places in javascript"

js number 2 decimal places

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

js number with four decimal places

var myNumber = 2;

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

get the integer after decimal in javascript

const number = 2.3;
const numberAfterDecimal = parseInt((number % 1).toFixed(2).substring(2));
const numberBeforeDecimal = parseInt(number);

console.log("value before decimal", numberBeforeDecimal);
console.log("value after decimal", numberAfterDecimal);