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devdame/form-validator.js

Forked from ksolo/form-validator.js
Last active August 29, 2015 13:56
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Form Validation
Raw
form-validator.js
// shorthand for $(document).ready();
$(function(){
//Your code...
$("form").on("submit", function(event) {
function checkLength(password) {
if(password.length < 8) {
errors.push("Your password must be at least 8 characters long.");
};
};
function checkForCapitals(password) {
var regex = /[A-Z]/;
if(password.match(regex) === null) {
errors.push("Your password must contain at least one capital letter.");
};
};
function checkForNumber(password) {
var regex = /[1-9]/;
if(password.match(regex) === null) {
errors.push("Your password must contain at least one number (1-9).")
}
}
function checkEmail(email) {
var regex = /(\w|\.)+@(\w|\.)+\.\w{2,}/;
if(email.match(regex) === null) {
errors.push("You must use a valid email address.");
};
};
function appendError(error, index, array) {
var ul = document.getElementById("errors");
var newLI = document.createElement("li");
ul.appendChild(newLI);
newLI.innerHTML = error
}
event.preventDefault();
var password = document.forms["sign_up"]["password"].value;
var email = document.forms["sign_up"]["email"].value;
var errors = [];
checkLength(password);
checkForCapitals(password);
checkForNumber(password);
checkEmail(email);
errors.forEach(appendError);
});
});
Raw
index.html
<!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>
Raw
main.css
ul#errors {
color: red;
}
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