Rounding

[DrTrans]

Hi , Very new JS!. and need some help with Rounding. I got this code and it works but does round the numbers. Is there a way to round to the second decimal point the variables:

 

document.check.fee.value

document.check.sum.value

 

 

<script type=\"text/javascript\"><!--

var rate = \".04\";

function updatesum() {

document.check.fee.value = (document.check.sum1.value -0 ) * rate;

document.check.sum.value = (document.check.sum1.value -0) + (document.check.fee.value -0);


}
</script>

[gizmola]

Safest bet is the application of good old prescription (*100, round, divide by 100).

 

originalvalue
roundedvalue = Math.round(originalvalue*100)/100;

 

You could also try

 

roundedvalue = originalvalue.toFixed(2);

 

 

 

[codefossa]

Basically the same thing giz told ya ..

Example: http://xaotique.no-ip.org/tmp/2.php

 

function rounded(number, place)
{
return Math.round(number * Math.pow(10, place)) / Math.pow(10, place);
}

[Adam]

You want:

 

var rounded = Math.round(number).toFixed(2);

[Adam]

Waaait up. Sorry, misread this post. I'm not sure why I suggested that. Dumb

[DrTrans]

 

Again, Yes, im new to JS!. im sure i have this wrong. somwhere.

 

<script type=\"text/javascript\"><!--

var rate = \".04\";

function updatesum() {

document.check.fee.value = (document.check.sum1.value -0 ) * rate;

document.check.sum.value = (document.check.sum1.value -0) + (document.check.fee.value -0);

document.check.rfee.value = Math.round(document.check.fee.value*100)\100;

document.check.rsum.value = Math.round(document.check.sum.value*100)\100;

}
</script>

[codefossa]

If you use the function I provided, rounding to two decimal places would look like.

 

var newval = rounded(val, 2);

 

So, to update the fee.

 

document.check.rfee.value = rounded(parseInt(document.check.sum1.value) * parseInt(rate), 2);

 

And .. it's already rounded.  If you still wanted both.

 

document.check.fee.value = parseInt(document.check.sum1.value) * parseInt(rate);
document.check.rfee.value = rounded(document.check.fee.value, 2);