:embarassei need to validate the form .. fields should not be empty is justified... but the last field i.e var z should be numeric ..please reply fast Code: function validateform() { var x=document.getElementById("nameid").value; if(x==''){alert("name should not be empty");return false;} var y=document.getElementById("qualificationid").value ; if(y==''){alert("qualification should not be empty");return false;} var z=document.getElementById("rollnumid").value; if(z==''){alert("rollnum should not be empty");return false;} }
i need to do numeric validation to last field wher if i enter an alphabet by default 0 is entring into table ...please help me with code
Your issue may be with PHP Validation and not the code you have just posted. Try to share relevant code so that we can help
here isthe complete code ...please help me in validating rollnum field PHP: <?php$con = mysql_connect("localhost","root","");if (!$con) { die('Could not connect: ' . mysql_error()); }mysql_select_db("tutorial", $con);if($_REQUEST["submit"]=="submit"){$sql="INSERT INTO friends (name, qualification, rollnum)VALUES('$_POST[name]','$_POST[qualification]','$_POST[rollnum]')";if (!mysql_query($sql,$con)) { die('Error: ' . mysql_error()); }}mysql_close($con);?> <html><head><script type="text/javascript">function validateform() { valid=true; var Numbers = '0123456789'; var x=document.getElementById("nameid").value; if(x==''){alert("name should not be empty");return false;} var y=document.getElementById("qualificationid").value; if(y==''){alert("qualification should not be empty");return false;} var z=document.getElementById("rollnumid").value; if(z==''){alert("rollnum should not be empty");return false;}if(isNaN(z))alert("Characters are not allowed in the Phone Number");return false; }</script><body><div style="position:absolute;top:100px;left:60px;"><h1 align="center"><font size=5 color="red">submit details to the table</font></h1> <form name=form action="form.php" method="post"><table border=2 cellspacing=0 cellpadding=0><tr><td>name</td><td><input type="text" name="name" id="nameid" /></td></tr></br><tr><td>qualification</td><td> <input type="text" name="qualification" id="qualificationid" /></td></tr></br><tr><td>rollnum</td><td><input type="text" name="rollnum" id="rollnumid"/></td></tr></br></table></br><input type="submit" name="submit" value="submit" onclick="return validateform()"></form></div><div style="position:absolute;bottom:60px;left:60px;"><?phpecho "the added record is $_REQUEST[name],$_REQUEST[qualification],$_REQUEST[rollnum] ";?></div><div style="position:absolute;top:60px;left:600px;"><html><head>friends table</head><title>db</title><body><br><?php$con = mysql_connect("localhost","root","");if (!$con) { die('Could not connect: ' . mysql_error()); }echo "the table from the database is as follows";$db_selected = mysql_select_db("tutorial",$con);$string="select * from friends";$result=mysql_query($string,$con);?><table align="center" border="4" cellpadding="5" cellspacing="5" width="50%"><tr><th>name</th><th>qualification</th><th>rollnum</th></tr><?phpwhile($row=mysql_fetch_array($result)){ echo "<tr><td align='center'>$row[name]</td><td align='center'>$row[qualification]</td><td align='center'>$row[rollnum]</td></tr>";}?></table></div></body></html>
Show some effort of posting the problematic code and and not the complete code. No one would debug your complete issues.
Maybe you can share relevant code so I can reply easily to your question? Are you sure it is about the code?
i dont get your issue very well but from what i got you need to make sure that the last field, that is 'rollnumid' is always a numeric value JS level check use this function to check whether it is a number <script> Code: function isNumeric(n){ if(!isNaN(n) && typeof(n)=='number'){ return true; }else{ return false; } } </script> PHP level check simply use the is_numeric method PHP: <?phpif(is_numeric($rollid)){ do stuff} ?>
