Javascript Validation Part 5 (Registration Form Validation)

<html xmlns="http://www.w3.org/1999/xhtml">

<head id="Head1" runat="server">

<title>Registration Form Validation</title>

<script language="javascript" type="text/javascript">

function validate() {

var summary = "";

summary += isvalidate();

summary += isvalidateFirstname();

summary += isvalidateLocation();

if (summary != "") {

alert(summary);

return false;

}

else {

return true;

}

}

function isvalidate() {

var uid;

var temp = document.getElementById("<%=user.ClientID %>");

uid = temp.value;

if (uid == "") {

return ("Please Enter UserName" + "\n");

}

else {

return "";

}

}

function isvalidateFirstname() {

var uid;

var temp = document.getElementById("<%=fname.ClientID %>");

uid = temp.value;

if (uid == "") {

return ("Please enter firstname" + "\n");

}

else {

return "";

}

}

function isvalidateLocation() {

var uid;

var temp = document.getElementById("<%=location.ClientID %>");

uid = temp.value;

if (uid == "") {

return ("Please enter Location" + "\n");

}

else {

return "";

}

}

</script>

</head>

<body>

<form id="form1" runat="server">

<table align="center">

<tr>

<td>Name</td>

<td><asp:TextBox ID="user" runat="server" /></td>

</tr>

<tr>

<td>First Name</td>

<td><asp:TextBox ID="fname" runat="server" /></td>

</tr>

<tr>

<td>Location</td>

<td><asp:TextBox ID="location" runat="server" /></td>

</tr>

<tr>

<td></td>

<td>

<asp:Button ID="btnsubmit" runat="server" Text="Save"

OnClientClick ="javascript:validate()" />

</td>

</tr>

</table>

</form>

</body>

</html>