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validate input

Hi guys,

i am creating one of this order form where the user would need to enter their credit card numbers in a text field..

can u guys give me an idea where can i get reference how to use js to make sure the input is interger only and no spacing or dash entered ??

please advise… thanks

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JavaScript

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@JonaJun 25.2004 — <i>
</i>&lt;input type="text" name="creditCard" onchange="if(!this.value.match(/^d$/g)) {alert('Invalid');} else {alert('Valid'); }"&gt;
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