HOW TO VALIDATE INPUT FIELD NUMERIC WITH FIXED NUMBER OF DIGIT
Validation for Number(CONTACT NUMBER (10 Digit max )).
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<script language="javascript" type="text/javascript">
function fixedlength(textboxID, keyEvent, maxlength) {
//validation
for digits upto 'maxlength' defined by caller function
if (textboxID.value.length > maxlength) {
textboxID.value =
textboxID.value.substr(0, maxlength);
}
else if (textboxID.value.length < maxlength ||
textboxID.value.length == maxlength) {
textboxID.value =
textboxID.value.replace(/[^\d]+/g, '');
return true;
}
else
return false;
}
function CheckMax(controlname) {
var num = document.getElementById('<%=txtAmount.ClientID %>').value;
if (num > 100 || num <= 0) {
alert('Please Enter Value between 1 to 100');
document.getElementById('<%=txtAmount.ClientID %>').value = '';
document.getElementById('<%=txtAmount.ClientID %>').focus();
return false;
}
return true;
}
</script>
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<form id="form1" runat="server" action="ValidateFormWebUI.aspx" autocomplete="off">
<div class="submain">
<table class="tblform">
<tbody>
<tr>
<td class="textfield" title="Enter Name">Name</td>
<td class="textfield">
<input id="txtName" name="NAME" class="InputField" maxlength="150" type="text" value="" /></td>
</tr>
<tr>
<td class="textfield" title="Enter Name">Contact</td>
<td class="textfield"><asp:textbox class="InputField" id="txtContactNo" runat="server" maxlength="10" onblur="return fixedlength(this, event, 10);" onkeypress="return fixedlength(this, event, 10);" onkeyup="return fixedlength(this, event, 10);"></asp:textbox></td>
</tr>
<tr>
<td class="textfield" title="Enter Name">Amount
(0-100)</td>
<td class="textfield"><asp:textbox class="InputField" id="txtAmount" runat="server" maxlength="3"></asp:textbox></td>
</tr>
</tbody>
</table>
</div>
</form>
