rounding decimals 1

[riffy]

Hi guys,

I got my other problem to work, the calculator problem.
This time I want to know is there a way to have only 2 decimal places? I'm calculating costs and when I multiply 2 values together in a couple of my functions, the answers result in many digits after the decimal. So is there a method that can round to only 2 decimal places?
I don't think Math.round() will do it, since that only rounds to integers right?

One of my functions is:

function lamp_savings () {
document.cost.save_lamps.value = ((document.cost.ann_cost2.value) * (document.cost.watt_save2.value))
document.cost.save_lamps.blur()
}

Thanks,
Arif

 

[cwinans]

[tt]

  function RoundDecimal(x) {
    var num = new String(x);

    // getting integer portion of num
    var int = num.substr(0, num.indexOf("."));
    
    // getting remainder
    var rem = num % int;
    
    if(rem < .5)
      return int;
      
    return ++int;
  }

[/tt] I hope this helped! ;-)
- Casey Winans

 

[riffy]

instead of having onFocus="this.blur();" in an text box,
can we put that in the function that it's calling?
like for example

<input type=&quot;text&quot; name=&quot;try_this&quot; size=&quot;6&quot; onFocus=&quot;calculate();&quot;>
and in calculate make it blur? or do i have to include it within the tag?