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Form Validation
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$(function() { | |
$('form').on('submit', function(event) { | |
errors = [] | |
function validateForm(email, password) { | |
console.log(email + " " + password) | |
function validateEmail(email) { | |
var atpos = email.indexOf("@"); | |
var dotpos = email.lastIndexOf("."); | |
if (atpos < 1 || dotpos < atpos + 2 || dotpos + 2 >= email.length) { | |
errors.push("Not a valid e-mail address"); | |
} | |
} | |
function validatePassword(password) { | |
if (password.match(/[0-9]/) === null) { | |
errors.push("Password must contain at least one numerical value."); | |
} | |
if (password.match(/[A-Z]/) === null) { | |
errors.push("Password must contain at least one capital letter."); | |
} | |
if (password.length < 8) { | |
errors.push("Password must be at least eight characters long."); | |
} | |
} | |
validateEmail(email) | |
validatePassword(password) | |
} | |
event.preventDefault() | |
var data = $('form').serializeArray(); | |
validateForm(data[0].value, data[1].value); | |
// console.log(errors) | |
function checkErrors(event) { | |
console.log(errors) | |
if (errors.length > 0) { | |
$.each(errors, function(i, error) { | |
$('#errors').append('<li>' + error + '</li>'); | |
}) | |
} | |
} | |
checkErrors() | |
}) | |
}); |
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<!doctype html> | |
<html lang="en"> | |
<head> | |
<meta charset="UTF-8"> | |
<link rel="stylesheet" href="main.css"> | |
<title>Form Validation</title> | |
</head> | |
<body> | |
<form name="sign_up" action="#" method="post"> | |
<label for="email">Email</label> | |
<input type="text" name="email" /> | |
<label for="password">Password</label> | |
<input type="password" name="password" /> | |
<button type="submit">Sign Up</button> | |
<ul id="errors"></ul> | |
</form><body> | |
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script> | |
<script src="form-validator.js"></script> | |
</body> | |
</html> |
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ul#errors { | |
color: red; | |
} |
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