# Currency Input

**URL:** https://forum.kirupa.com/t/currency-input/327148
**Category:** programming
**Created:** [February 8, 2012, 9:31pm UTC](https://forum.kirupa.com/t/currency-input/327148 "2012-02-08T21:31:53Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Vanss472](https://avatars.discourse-cdn.com/v4/letter/v/c77e96/32.png) [@Vanss472](https://forum.kirupa.com/u/Vanss472)
#### Post date: [February 8, 2012, 9:31pm UTC](https://forum.kirupa.com/t/currency-input/327148/1 "2012-02-08T21:31:53Z")

</div>

Hi

I have this input tag where you put the total of your receipt :

```auto
<input type="text" name="currency" id="currency" class="text-input" onBlur="this.value=formatCurrency(this.value);" />

```

This is my javascript:

```auto
<script type="text/javascript">
<!-- Begin
function formatCurrency(num) {
num = num.toString().replace(/\$|\,/g,'');
if(isNaN(num))
num = "0";
sign = (num == (num = Math.abs(num)));
num = Math.floor(num*100+0.50000000001);
cents = num%100;
num = Math.floor(num/100).toString();
if(cents<10)
cents = "0" + cents;
for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
num = num.substring(0,num.length-(4*i+3))+','+
num.substring(num.length-(4*i+3));
return (((sign)?'':'-') + '$' + num + '.' + cents);
}
// End -->
</script>

```

Users can only enter receipt more than $10.00 bucks, how can I set that on my script?

:geek: