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Enter Amount Text Field

Hi
I should present a text field that represents amount in USD.
This amount is combined of two parts left of the decimal point and right of the decimal point, e.g. 10.00.
I want the field to be represented when the ".00" is already printed on it so that the customer will only have to type the left part.
How should I do it with Java Script.
Please give me a full detailed example.
Thank you
uri22

ASKER CERTIFIED SOLUTION

mattyk

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a.marsh

Well that is a simple way of doing it mattyk.

However I'm suspecting there is a little more to this than that...

..is it the case uri22 that the .00 never changes or is the user able to change the value to the right of the decimal point?

Ant

mattyk

yeah I was thinking that it would probably be more involved too but I figured why not start with the simplest solution and then take it from there :)

-matt

jerelw

this should point you the right way.

if you'd like more validation, i can add that.

<HEAD>
<META NAME="GENERATOR" Content="Microsoft Visual Studio 6.0">
<TITLE></TITLE>
<SCRIPT>
function makeCurrency(form) {
var dollars = "";
var value = form.USD.value;
var containsDot = false;

for(var i=0;i<value.length; i++) {
if (value.charAt(i) != ".") {
dollars += value.charAt(i);
}
else {
containsDot = true;
dollars += value.charAt(i);
}
}
if(!containsDot) {
dollars += ".00";
}
alert(dollars);
}
</SCRIPT>
</HEAD>
<BODY>

<FORM NAME="TEST">
<INPUT TYPE="TEXT" SIZE="15" NAME="USD">
<INPUT TYPE="BUTTON" VALUE="CONVERT" onClick="makeCurrency(TEST)">
</FORM>

danil082697

I wrote a function which converts a number into currency,
here it is
function showCurrency (number) {
var Result = "";
var negFlag = false;
var n = parseFloat(number);
if (n<0){
n = -1*n;
negFlag = true;
}
var trunc = parseInt(n);
if (trunc>1000){
while (trunc>1000){
tempVal = parseInt(trunc%1000);
if (tempVal == 0)
tempVal = "000";
else if
(tempVal < 10) tempVal = "00"+tempVal;
else if
(tempVal < 100) tempVal = "0"+tempVal;
Result = "," + tempVal+Result;
trunc=parseInt(trunc/1000);
}
Result = "" + trunc + Result + ".";
}
else {
Result = "" + trunc + ".";
}
trunc = parseInt(n);
n = (n - trunc) * 10;
trunc = parseInt (n);
Result = Result + trunc;

n = (n - trunc) * 10;
trunc = parseInt (n);
Result = Result + trunc;
if (negFlag)
return "$-"+ Result;
else
return "$"+ Result;
}

Triskelion

<HTML>
<SCRIPT Language="JavaScript">
function CheckVal(strAmount)
{
var arrDollarsNCents;
if ("" == strAmount.value)
{
strAmount.value = "0.00";
return;
}
arrDollarsNCents=strAmount.value.split(".");
if (2 != arrDollarsNCents.length)
{
strAmount.value += ".00";
}
if (2 == arrDollarsNCents.length)
{
while (2 > arrDollarsNCents[1].length)
{
arrDollarsNCents[1] += "0";
strAmount.value += "0";
}
}
}
</SCRIPT>
<BODY>
<FORM NAME=frmData>
<INPUT TYPE=TEXT NAME=strAmount SIZE=7 onBlur="CheckVal(this)"> </INPUT>
</FORM>
</BODY>
</HTML>

Triskelion

See comment from
12/13/2000 12:10PM PST

Lunchy

Hello Triskelion,

You have been around long enough that you should know. If there is valid expert comment before you post yours then you should restrict yourself to commenting instead of locking the question. Remember the questioner has the ability to accept your answer if he/she feels it is the best one.

I am rejecting your answer on this basis. uri22, please note that you can still accept this answer if it is the best one for you, but evaluate them on their merits please.

=============

Hi uri22

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PLEASE DO NOT AWARD THE POINTS TO ME. We also request that you review any other open questions you might have and deal with them as necessary.

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Netminder

Netminder

There has been no activity in this question in quite some time, and it looks like it has been abandoned. As part of our ongoing mission to clean up the topic areas, a Moderator will finalize this question within the next seven (7) days. At that time, either I or one of the other Moderators will force/accept the comment of mattyk.

DO NOT ACCEPT THIS COMMENT AS AN ANSWER. If you have further comments on this question or the recommendation, please leave them here.

Thanks,

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Netminder

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