Hi All, I'm going
to explain to allow only numbers in text-box using JavaScript
Today's, I have a requirement to allow only numbers in the contact no., hours, Id etc. textbox using JavaScript, want to allow only numbers or digits and the alphabetic and special characters(A to Z a to z.,@#!$%^&*()_+=|\ etc.) are not allowed in the text-box.
Today's, I have a requirement to allow only numbers in the contact no., hours, Id etc. textbox using JavaScript, want to allow only numbers or digits and the alphabetic and special characters(A to Z a to z.,@#!$%^&*()_+=|\ etc.) are not allowed in the text-box.
These Code samples
are working on mostly browsers (IE, Mozilla, Firefox etc.)
In the
1st step, Code Sample for HTML/ASP.Net
HTML :
<iput id="txt_PhoneNo" type="text" name="txt_PhoneNo"
onkeypress="return allowNumbersOnly(keyEvent);" >
ASP.Net :
<asp:TextBox id="txt_PhoneNo"
onkeypress="return
allowNumbersOnly(keyEvent);" runat="server" />
In the
2st step, Code Sample for JavaScript
<script type="text/javascript" lang="ja">
//Is
used to check the only numbers in the textbox.
function allowNumbersOnly(keyEvent) {
var result = (keyEvent.which) ? keyEvent.which :
event.keyCode;
if (result > 31 && (result < 48 || result >
57)) {
return false;
} else {
return true;
}
}
</script>
|
Anil Singh is an author, tech blogger, and software programmer. Book writing, tech blogging is something do extra and Anil love doing it. For more detail, kindly refer to this link..
|