
<html>
<head>
<script type="text/javascript">
function validateForm() {
var sname=document.getElementById('spocname');
var scontact=document.getElementById('spoccontact');
if(sname.value.length<10){
alert('enter min 10 characters');
sname.focus();
}
if(scontact.value.length>10){
alert('enter less than 10 characters');
scontact.focus();
}
}
</script>
</head>
<body>
<form id="f1">
SPOC Name:<input type="text" id="spocname" onBlur='validateForm()'><br><br>
SPOC Contact:<input type="text" id="spoccontact" onBlur='validateForm()'><br><br>
<input type="button" id="sub" name="submit" value="Submit">
</form>
</body>
</html>