toFixed(2) vs Math.round

[pmactdot]

Hi,

I'm trying to get the below ShowVal() case study to dispaly/return a value to 2 decimals. Where/how would I use toFixed(2) instead or Math.round?

 
function ShowVal() {
    var I=eval(document.mortgage_calculator.interest_rate.value);
    var N=eval(document.mortgage_calculator.total_num_months.value);
    var S=eval(document.mortgage_calculator.loan_amount.value);
    Document.mortgage_calculator.monthly_pymt.value=Math.round(Monthly(I,N,S)*100)/100;
    document.mortgage_calculator.total_pymts.value=Math.round(document.mortgage_calculator.monthly_pymt.value*N*100)/100;
}
 
 

Cheers!

[mrhoo]

toFixed returns a string, Math.round returns a number.

 
var n=1/3;
alert('n=1/3\nn.toFixed(2)= '+n.toFixed(2)+
'\nMath.round(n)= '+Math.round(n));