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Commit a18d7f4d authored by MADAKA TEJA's avatar MADAKA TEJA
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added lab_02 file

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<!DOCTYPE html>
<html>
<head>
<title>
HTML_FORM
</title>
</head>
<body>
<h1> Task B (Outlab 02) </h1>
<form name="myForm" action="https://www.cse.iitb.ac.in/~sharat/php/example/form.php" method="post" onsubmit="return validateForm()">
Text field:<br>
<input type="text" name="text" required>
<p id = "textErr" style="color:red"></p>
<br>
Password:<br>
<input type="password" name="pass" required>
<p id = "passErr" style="color:red"></p>
<br>
E-mail:<br>
<input type="text" name="email" required>
<p id = "emailErr" style="color:red"></p>
<br>
<input type="submit" value="Submit">
</form>
<script>
function foundSpecialCharacters(p)
{
var a = p.indexOf('!');
if ( a >= 0 ) a = 0;
var b = p.indexOf('$');
if ( b >= 0 ) b = 0;
var c = p.indexOf('@');
if ( c >= 0 ) c = 0;
var d = p.indexOf('_');
if ( d >= 0 ) d = 0;
a = a + b + c + d;
if ( a == -4 )
{
return false;
}
else
{
return true;
}
}
function validateForm()
{
/*
* text length validation
*/
var x = document.forms["myForm"]["text"].value.length;
if (x > 50 || x < 6)
{
document.getElementById("textErr").innerHTML = "should be 6 to 20 characters long";
return false;
}
else
{
document.getElementById("textErr").innerHTML = "";
}
/*
* password length validation
*/
var passlen = document.forms["myForm"]["pass"].value.length;
if( passlen > 20 || passlen < 8 )
{
document.getElementById("passErr").innerHTML = "should be 8 to 20 characters long";
return false;
}
else
{
document.getElementById("passErr").innerHTML = "";
}
/*
* special characters validation
*/
if ( !foundSpecialCharacters(document.forms["myForm"]["pass"].value ) )
{
document.getElementById("passErr").innerHTML = "atleast 1 special character from the set {$,!,@,_} is required";
return false;
}
else
{
document.getElementById("passErr").innerHTML = "";
}
/*
* E-mail validation
*/
var emailArr = document.forms["myForm"]["email"].value.split("@");
if ( emailArr.length != 2 )
{
document.getElementById("emailErr").innerHTML = "should be of the form \"local-part@domain-part\"";
return false;
}
else
{
document.getElementById("emailErr").innerHTML = "";
}
var localPart = emailArr[0];
if (localPart.length <= 2)
{
document.getElementById("emailErr").innerHTML = "local-part should be atleast 3 characters long";
return false;
}
else
{
document.getElementById("emailErr").innerHTML = "";
}
var localPattern = /^[a-zA-Z0-9\._]{2,}$/;
if (!localPattern.test(localPart))
{
document.getElementById("emailErr").innerHTML = "local-part can only contain alphanumeric characters and {.,_}";
return false;
}
else
{
document.getElementById("emailErr").innerHTML = "";
}
var domainPart = emailArr[1] ;
var domainArray = domainPart.split(".") ;
var domainPattern1 = /^[a-zA-z]{3,}$/ ;
if ( !domainPattern1.test(domainArray[0]))
{
document.getElementById("emailErr").innerHTML = "substring of domain-part before first \".\" should have atleast 3 alpha characters";
return false;
}
else
{
document.getElementById("emailErr").innerHTML = "";
}
var domainArraylen = domainArray.length;
var domainPattern2 = /^[a-zA-Z]{2,}$/;
var i
for (i=1; i < domainArraylen; i++)
{
if( !domainPattern2.test(domainArray[i]))
{
document.getElementById("emailErr").innerHTML = "substring enclosed within \".\" must have at least 2 alpha characters between them";
return false;
}
else
{
document.getElementById("emailErr").innerHTML = "";
}
}
}
</script>
</body>
</html>
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