Also available is the javascript functions parseInt() and isNaN():
var i = parseInt(userInput);
if (isNaN(i))
alert('you must enter a number!');
rob
On 4/19/07, Ⓙⓐⓚⓔ <[EMAIL PROTECTED]> wrote:
instead of
if (inputAddVal != '') {
value = eval(value) +
eval(inputAddVal);
}
try
if (inputAddVal.match(/^\d+$/)') {
value +=inputAddVal;
}
regular expression are your friends, get to know them! And you don't need
to eval to get a numeric value from a numeric string!
and event isn't used (and not needed), right?
On 4/18/07, reactive <[EMAIL PROTECTED]> wrote:
>
>
> Hey Guys
>
> Ive had my first go at writing with Jquery, i know VERY basic JS and
> jquery is making life a lot easier, but not easy enough it seems....
>
> So my task was to write a script to calculate a number of input fields
> and display the total in another input, which ive managed to do. Also
> it needed to notify the user if the total went above 100, which ive
> also figured out.
> The part im stuck on, is making sure that only numbers get passed in,
> and displaying an alert if the user inputs anything other than a digit
> from 1-9. Probably sounds easy for you guys, if so, can you please
> enlighten me.
>
> Also, if you see any ways that my code can be simplified, please let
> me know. Im all about having the least code possible!
>
> So here it is:
>
> JS:
>
> $(document).ready(function() {
>
> function setTotal(event) {
> var value = 0;
>
> $("input.inputAdd").each(function() {
> var inputAddVal = $(this).val()
> if (inputAddVal != '') {
> value = eval(value) +
> eval(inputAddVal);
> }
> });
>
> $("input.inputSub").each(function() {
> var inputSubVal = $(this).val()
> if (inputSubVal != '') {
> value = eval(value) +
> eval(inputSubVal);
> }
> });
>
> $("input.inputTotal").val(value)
>
> if (value > 100) {
> $("input.inputTotal").addClass("error")
> alert('The total must add up to 100%')
> }
> else {
> $("input.inputTotal
> ").removeClass("error")
> }
> }
>
> $("input.inputAdd").bind("change", setTotal)
> $("input.inputSub").bind("change", setTotal)
>
> setTotal();
> });
>
>
> HTML (very simple for testing only):
>
> <form>
>
> <input class="inputAdd" type="text" style="width: 20px" /><br />
> <input class="inputAdd" type="text" style="width: 20px" /><br />
>
> <input class="inputAdd" type="text" style="width: 20px" /><br />
> <input class="inputAdd" type="text" style="width: 20px" /><br />
>
> <input class="inputAdd" type="text" style="width: 20px" /><br />
>
> TOTAL:
> <input class="inputTotal" type="text" />
>
> </form>
>
>
--
Ⓙⓐⓚⓔ - יעקב ʝǡǩȩ ᎫᎪᏦᎬ
--
Rob Desbois
Eml: [EMAIL PROTECTED]
Tel: 01452 760631
Mob: 07946 705987
"There's a whale there's a whale there's a whale fish" he cried, and the
whale was in full view.
...Then ooh welcome. Ahhh. Ooh mug welcome.
