I want to make a validation for mandatory values but the return value is undefined
<form class="list" id="companyform">
<div class="card">
<div class="card-content">
<ul>
<li class="item-content item-input item-input-with-info">
<div class="item-inner">
<div class="item-title item-label">Address</div>
<div class="item-input-wrap">
<input type="text" name="address" id="address" placeholder="Address" required validate>
<span class="input-clear-button"></span>
</div>
</div>
</li>
...................................................................
var valid = app.input.validateInputs('#companyform');
console.log(valid);
console.log(app.input.validate('#address'));