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use-element-event.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>FormValidation example - Validate a native form without using any CSS framework</title>
<meta charset="utf-8" />
<meta content="width=device-width,initial-scale=1" name="viewport" />
<!-- Replace with your path -->
<link rel="stylesheet" href="/vendors/@form-validation/umd/styles/index.min.css" />
<style>
/* It's up to you to add custom styles to match with the design */
.field-group {
margin-bottom: 1em;
}
.err {
color: red;
}
.is-invalid {
border: 1px solid red;
}
.is-valid {
border: 1px solid green;
}
</style>
</head>
<body>
<form id="demoForm" method="post">
<div class="field-group">
<label>First name</label>
<div>
<input type="text" name="firstName" />
</div>
<div class="err"></div>
</div>
<div class="field-group">
<label>Last name</label>
<div>
<input type="text" name="lastName" />
</div>
<div class="err"></div>
</div>
<div class="field-group">
<label>Username</label>
<input type="text" name="username" />
<div class="err"></div>
</div>
<div class="field-group">
<label>Email</label>
<input type="text" name="email" />
<div class="err"></div>
</div>
<div class="field-group">
<label>Password</label>
<input type="password" name="password" />
<div class="err"></div>
</div>
<div class="field-group">
<label>Gender</label>
<div>
<label for="genderMale"
><input type="radio" name="gender" id="genderMale" value="male" /> Male</label
>
</div>
<div>
<label for="genderFemale"
><input type="radio" name="gender" id="genderFemale" value="female" /> Female</label
>
</div>
<div>
<label for="genderOther"
><input type="radio" name="gender" id="genderOther" value="other" /> Other</label
>
</div>
<div class="err"></div>
</div>
<div class="field-group">
<label id="captchaOperation"></label>
<input type="text" name="captcha" />
<div class="err"></div>
</div>
<div class="field-group">
<label><input type="checkbox" name="agree" value="agree" /> Agree with the terms and conditions</label>
<div class="err"></div>
</div>
<button type="submit">Submit</button>
</form>
<!-- Replace with your path -->
<script src="/vendors/@form-validation/umd/bundle/popular.min.js"></script>
<script>
document.addEventListener('DOMContentLoaded', function (e) {
// Generate a simple captcha
const randomNumber = function (min, max) {
return Math.floor(Math.random() * (max - min + 1) + min);
};
const random = [randomNumber(1, 100), randomNumber(1, 200)];
document.getElementById('captchaOperation').innerHTML = [random[0], '+', random[1], '='].join(' ');
const form = document.getElementById('demoForm');
FormValidation.formValidation(form, {
fields: {
firstName: {
validators: {
notEmpty: {
message: 'The first name is required',
},
},
},
lastName: {
validators: {
notEmpty: {
message: 'The last name is required',
},
},
},
username: {
validators: {
notEmpty: {
message: 'The username is required',
},
stringLength: {
min: 6,
max: 30,
message: 'The username must be more than 6 and less than 30 characters long',
},
regexp: {
regexp: /^[a-zA-Z0-9_]+$/,
message: 'The username can only consist of alphabetical, number and underscore',
},
},
},
email: {
validators: {
notEmpty: {
message: 'The email address is required',
},
emailAddress: {
message: 'The input is not a valid email address',
},
},
},
password: {
validators: {
notEmpty: {
message: 'The password is required',
},
stringLength: {
min: 8,
message: 'The password must have at least 8 characters',
},
different: {
message: 'The password cannot be the same as username',
compare: function () {
return form.querySelector('[name="username"]').value;
},
},
},
},
gender: {
validators: {
notEmpty: {
message: 'The gender is required',
},
},
},
captcha: {
validators: {
callback: {
message: 'Wrong answer',
callback: function (input) {
const items = document.getElementById('captchaOperation').innerHTML.split(' ');
const sum = parseInt(items[0]) + parseInt(items[2]);
return input.value == sum;
},
},
},
},
agree: {
validators: {
notEmpty: {
message: 'You must agree with the terms and conditions',
},
},
},
},
plugins: {
trigger: new FormValidation.plugins.Trigger(),
submitButton: new FormValidation.plugins.SubmitButton(),
message: new FormValidation.plugins.Message({
// This function indicates where we can display the error message
// `field` is the field name
// `element` is the field element
container: function (field, element) {
// Note that the current markup is
//
// <div class="field-group">
// <!-- Field element here -->
// <input type="text" />
//
// <!-- The error message -->
// <div class="err"></div>
// </div>
// Find the field group element
const fieldGroup = element.closest('.field-group');
// Find the error message
return fieldGroup.querySelector('.err');
},
}),
},
}).on('core.element.validated', function (e) {
// This event is triggered after validating a field
// See https://formvalidation.io/guide/events/core.element.validated
if (e.valid) {
e.elements.forEach(function (ele) {
ele.classList.add('is-valid');
ele.classList.remove('is-invalid');
});
} else {
e.elements.forEach(function (ele) {
ele.classList.add('is-invalid');
ele.classList.remove('is-valid');
});
}
});
});
</script>
</body>
</html>