HTML
<form class="form-demo" id="demoCheckbox">
<div class="form-row">
<label>Email</label>
<input type="email" required>
</div>
<div class="form-row">
<label>Password</label>
<input type="password" required>
</div>
<div class="form-row">
<label>
<input type="checkbox">
<span>I agree with the terms and conditions</span>
</label>
</div>
<button class="btn btn--primary">Submit</button>
</form>
JS
$('#demoCheckbox').bazeValidate({
onValidated: function (e) {
if ( !$('#dAgree').is(':checked') ) {
e.preventDefault();
alert('You have to check the checkbox');
}
}
});