automatical mask input currency [pure js]

Asked Mar 18 '16 at 10:29

Active Mar 18 '16 at 10:29

Viewed 1,383 times

i was looking around in the forum but i cant find anything like my case, sorry if duplicated.

i was found mask currency js but not work when im try to send the value into input text value.

the error is result from var masknumber can't fill in result money value. but when im try using document.write the result its work..

how im using masknumber value to form #resultsummoney ?

Here .JS

function format2(n, currency) {
        return currency + " " + n.toFixed(2).replace(/(\d)(?=(\d{3})+\.)/g, "$1.");

    }

    var qty = document.frm_money.qty.value;
    var money  = document.frm_money.money.value;

    var sum = eval(qty)*eval(money);

    var masknumber = document.write(format2(sum, "$") + "<br />");

    document.frm_money.resultsummoney.value=masknumber;

and Here is HTML form

<form name="frm_money">
        <input type="text" name="qty" id="qty" value="10">
        <input type="text" name="money" id="money" value="12000">

        <input type="text" name="resultsummoney" id="resultsummoney" >
    </form>

asked Mar 18 '16 at 10:29

SRL

1

**PLEASE** don't use `eval()`. – BenM Mar 18 '16 at 10:33
thanks for answer, but the result is same :( – SRL Mar 18 '16 at 10:35
I wasn't suggesting that `eval()` was causing your code not to work, but you really shouldn't use it within your code. – BenM Mar 18 '16 at 10:40
i was try your advice, removing eval() but the result its same :( – SRL Mar 18 '16 at 11:09
Please read my comment. Using (or not using) `eval()` **isn't the reason your code doesn't work**, it's just bad practice. – BenM Mar 18 '16 at 11:52

automatical mask input currency [pure js]

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