How to round a fractional number to two decimal places in JS?

Question

JavaScript

For example, we calculate like this: And the result can be like this: 1456.914819423 How to round this number two two zeros after the decimal points?
var summ = toFloat(212,31) * toFloat(723,62);

Answer 1

+12.3456789.toFixed(2); //12.35

// можно сделать удобную функцию 
function fix (num, n) {
    return +num.toFixed(n);
}

fix(12.3456789, 2); // 12.35