En este artículo te mostrare como validar y mostrarle al usuario que tan fuerte es la contraseña que está utilizando. Puedes descargar el proyecto en esta liga de descarga.
- Primero debes agregar los scripts a tu página de login, como se muestra a continuación:
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="CheckPassword.js"></script>
<link href="CheckPassword.css" rel="stylesheet" />
- Agrega un script, y asígnale el nombre CheckPassword.js. Escribe las siguientes líneas de código jQuery para comprobar las contraseñas.
$(document).ready(function () {
$('#txtPassword').keyup(function () {
$('#strengthMessage').html(checkStrength($('#txtPassword').val()))
})
function checkStrength(password) {
var strength = 0
if (password.length < 6) {
$('#strengthMessage').removeClass()
$('#strengthMessage').addClass('Short')
return 'Too short'
}
if (password.length > 7) strength += 1
// If password contains both lower and uppercase characters, increase strength value.
if (password.match(/([a-z].*[A-Z])|([A-Z].*[a-z])/)) strength += 1
// If it has numbers and characters, increase strength value.
if (password.match(/([a-zA-Z])/) && password.match(/([0-9])/)) strength += 1
// If it has one special character, increase strength value.
if (password.match(/([!,%,&,@,#,$,^,*,?,_,~])/)) strength += 1
// If it has two special characters, increase strength value.
if (password.match(/(.*[!,%,&,@,#,$,^,*,?,_,~].*[!,%,&,@,#,$,^,*,?,_,~])/)) strength += 1
// Calculated strength value, we can return messages
// If value is less than 2
if (strength < 2) {
$('#strengthMessage').removeClass()
$('#strengthMessage').addClass('Weak')
return 'Weak'
} else if (strength == 2) {
$('#strengthMessage').removeClass()
$('#strengthMessage').addClass('Good')
return 'Good'
} else {
$('#strengthMessage').removeClass()
$('#strengthMessage').addClass('Strong')
return 'Strong'
}
}
});
- Ahora debes crear la siguiente hoja de estilo CheckPassword.css
.Short {
width: 100%;
background-color: #dc3545;
margin-top: 5px;
height: 3px;
color: #dc3545;
font-weight: 500;
font-size: 12px;
}
.Weak {
width: 100%;
background-color: #ffc107;
margin-top: 5px;
height: 3px;
color: #ffc107;
font-weight: 500;
font-size: 12px;
}
.Good {
width: 100%;
background-color: #28a745;
margin-top: 5px;
height: 3px;
color: #28a745;
font-weight: 500;
font-size: 12px;
}
.Strong {
width: 100%;
background-color: #d39e00;
margin-top: 5px;
height: 3px;
color: #d39e00;
font-weight: 500;
font-size: 12px;
}
- Y por último el html completo
<!DOCTYPE html>
<html>
<head runat="server">
<title>Register Form</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="CheckPassword.js"></script>
<link href="CheckPassword.css" rel="stylesheet" />
</head>
<body>
<form id="form1">
<div class="container py-3">
<h4 class="text-center text-uppercase">estradawebgroup.com</h4>
<div class="row">
<div class="col-md-12">
<div class="row">
<div class="col-md-6 mx-auto">
<div class="card border-secondary">
<div class="card-header">
<h3 class="mb-0 my-2">Sign Up</h3>
</div>
<div class="card-body">
<div class="form-group">
<label>Name</label>
<div class="input-group">
<div class="input-group-prepend">
<span class="input-group-text"><i class="fa fa-user"></i></span>
</div>
<input ID="txtFirstName" Class="form-control" type="text"/>
</div>
</div>
<div class="form-group">
<label>Phone Number</label>
<div class="input-group">
<div class="input-group-prepend">
<span class="input-group-text"><i class="fa fa-phone"></i></span>
</div>
<input ID="txtPhoneNumber" Class="form-control" type="text"/>
</div>
</div>
<div class="form-group">
<label>Email</label>
<div class="input-group">
<div class="input-group-prepend">
<span class="input-group-text"><i class="fa fa-envelope"></i></span>
</div>
<input ID="txtEmail" Class="form-control" type="text"/>
</div>
</div>
<div class="form-group">
<label>Password</label>
<div class="input-group">
<div class="input-group-prepend">
<span class="input-group-text"><i class="fa fa-lock"></i></span>
</div>
<input ID="txtPassword" type="Password" Class="form-control"/>
</div>
<div id="strengthMessage"></div>
</div>
<div class="form-group">
<label>Confirm Password</label>
<div class="input-group">
<div class="input-group-prepend">
<span class="input-group-text"><i class="fa fa-lock"></i></span>
</div>
<input ID="txtConfirmPassword" type="Password" Class="form-control"/>
</div>
</div>
<div class="form-group">
<button type="submit" class="btn btn-success float-right rounded-0">Register</button>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</form>
</body>
</html>
- Prueba el resultado final
Contraseña corta
Contraseña débil
Buena contraseña
Contraseña segura
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