<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/intl-tel-input/16.0.11/css/intlTelInput.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/intl-tel-input/16.0.11/js/intlTelInput.min.js"></script>

<div class="input-field">
    <input type="tel" id="intl_phone_number" minlength="10" />
</div>

<script>
    const phoneInputField = document.querySelector("#intl_phone_number");
    const phoneInput = window.intlTelInput(phoneInputField, {
        separateDialCode: true,
        hiddenInput: "phoneno",
        utilsScript: "https://cdnjs.cloudflare.com/ajax/libs/intl-tel-input/16.0.11/js/utils.js"
    });
</script>