Need somehelp get data from checkbox in checkout

Question

I have used Aheadworks_OneStepCheckout and I added some checkbox.

However, I can't get the value of the checkbox. My code:

/**  * Copyright 2019 aheadWorks. All rights reserved.  * See
LICENSE.txt for license details.  */

define(
[
    'uiComponent',
    'Aheadworks_OneStepCheckout/js/model/checkout-data',
    'Aheadworks_OneStepCheckout/js/model/order-note/contact-type'
],
function (Component, checkoutData, contactType) {
    'use strict';

    return Component.extend({
        defaults: {
            template: 'Aheadworks_OneStepCheckout/sidebar/contact-type',
            inputValue: ''
        },
        isVisible: true,

        /**
         * @inheritdoc
         */
        initialize: function () {
            var contactType = checkoutData.getContactType();
            console.log('====='+ contactType);
            this._super();

            if (contactType) {
                this.inputValue(contactType);
            }
            this.inputValue.subscribe(function (newValue) {
                checkoutData.setContactType(newValue);
            }, this);
        },

        /**
         * @inheritdoc
         */
        initObservable: function () {
            this._super();
            this.inputValue = contactType;
            return this;
        },
        contactPhone : function () {
            console.log(this.checked);
            console.log(this.val());
            return data.val();
        },
    });
} );

Template:

<div class="aw-sidebar_contact-type" data-bind="visible: isVisible">
    <span data-role="title" class="toggle" data-bind="i18n:'Contacts'"></span>
    <div class="content" data-role="content">
        <input data-role="contact-type-input"
               data-bind="value: inputValue" id="contacttype" type="textbox" value="1" class="checkbox"> <label></label>

        <div class="contact">
            <div class="aw-onestepcheckout-general-form-field">
                <div class="control">
                    <input data-bind="value: contactPhone, click: function(){jQuery('#contacttype').val}" type="checkbox" id="contact[phone]" name="contact_phone" value="1" class="checkbox"> <label></label>
                </div>
                <label for="contact[phone]" data-bind="click: onSubmit" style="width:85%">1.Call or Text My Cell Phone</label>
                <div style="clear:both;"></div>
            </div>
            <div class="aw-onestepcheckout-general-form-field">
                <div class="control">
                    <input  type="checkbox" id="contact[local]" name="contact_local" value="1" class="checkbox"> <label></label>
                </div>
                <label for="contact[local]"  data-bind="click: onSubmit" style="width:85%">2.I will call you from a local land line when i check in and provide you with my information</label>
                <div style="clear:both;"></div>
            </div>
            <div class="aw-onestepcheckout-general-form-field">
                <div class="control">
                    <input  type="checkbox" id="contact[whassap]" name="contact_whassap" value="1" class="checkbox"> <label></label>
                </div>
                <label for="contact[whassap]" data-bind="click: onSubmit" style="width:85%">3.Contact me via whats app</label>
                <div style="clear:both;"></div>
            </div>
            <div class="aw-onestepcheckout-general-form-field">
                <div class="control">
                    <input  type="checkbox" id="contact[caretaker]" name="contact_caretaker" value="1" class="checkbox"> <label></label>
                </div>
                <label for="contact[caretaker]" data-bind="click: onSubmit" style="width:85%">4.Contact the concerige/Properity Caretaker </label>
                <div style="clear:both;"></div>
            </div>
            <div class="aw-onestepcheckout-general-form-field">
                <div class="control">
                    <input type="checkbox" id="contact[room]" name="contact_room" value="1" class="checkbox"> <label></label>
                </div>
                <label for="contact[room]" data-bind="click: onSubmit" style="width:85%">5.I have provied my room number - Call My Room"</label>
                <div style="clear:both;"></div>
            </div>
        </div>
    </div>
</div>

Expect: when I checkbox in the list. All value will push to textbox id contacttype