decimal numbers

[qali]

Hello,

I have a problem with an equation....
I divide a X number by 30.
This number X can be anything between 1 and 10 (ie 1,1.2,...)
I would like the result of this division to be formatted like this: xx.xx

Does anybody know how to do that ??

Thx
qali

[yasunobu13]

code:

---

function toDollar(num){

num = num * 100;

num = Math.round(num); 

// you might want to use Math.floor if you don't want rounding



num = num / 100;

return num;

}

---

then use it as

code:

---

x = 1231231;

x = x / 30;

x = toDollar(x);

---

j

[oldnewbie]

But that won't allways give 2 decimals, if that's what he's after.

[yasunobu13]

Originally posted by oldnewbie
But that won't allways give 2 decimals, if that what he's after.

then I request that the question be clarified. Does the number need to be in the format xx.xx where there are always four numbers and a decimal point? Do you want the number formatted so that it only goes to the second deciaml place? Or is it somewhere in between?

j

[oldnewbie]

Originally posted by qali
...
I would like the result of this division to be formatted like this: xx.xx
...

Seems clear to me...

[oldnewbie]

If it were the case...

Math.roundTo = function(num,dp){
        var d = Math.pow(10,dp);
        return Math.round(num*(d+0.00000001))/d;
};

stop();

//You can even use negative numbers for decimal places
//Math.roundTo(12345,-2)) //12300

//format a number into specified number of decimal places
Math.formatDecimals = function (num, digits) {
        //if no decimal places needed, we're done
        if (digits <= 0) {
                return Math.round(num);
        }
        //round the number to specified decimal places
        //e.g. 12.3456 to 3 digits (12.346) -> mult. by 1000, round, div. by 1000
        var tenToPower = Math.pow(10, digits);
        var cropped = String(Math.round(num * tenToPower) / tenToPower);

        //add decimal point if missing
        if (cropped.indexOf(".") == -1) {
                cropped += ".0";  //e.g. 5 -> 5.0 (at least one zero is needed)
        }

        //finally, force correct number of zeroes; add some if necessary
        var halves = cropped.split("."); //grab numbers to the right of the decimal
        //compare digits in right half of string to digits wanted
        var zerosNeeded = digits - halves[1].length; //number of zeros to add
        for (var i=1; i <= zerosNeeded; i++) {
                cropped += "0";
        }
        return(cropped);
} //Robert Penner May 2001 - source@robertpenner.com

my_num = 126.00156 / 30;
my_num2 = Math.formatDecimals(my_num,2); 
trace (my_num2);