Found 2 elements with non-unique id #billing-new-address-form Magento 2

Question

When on the checkout page, I receive the following console error when selecting the shipping method and going to the next-step 'payment'.

[DOM] Found 2 elements with non-unique id #billing-new-address-form:

[DOM] Found 2 elements with non-unique id #billing-save-in-address-book: `

How can I resolve this issue?

Answer 1

This issue is fixed in 2.3-develop branch, it's also backported to 2.2 and going to be released in 2.2.6, I can see it's backported to 2.1 too.

There are 2 places need to change to fix the issue

vendor/magento/module-gift-message/view/frontend/web/template/gift-message-form.html

<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<!-- ko if: isActive() -->
<div class="gift-message">
    <div class="gift-options-title">
        <span data-bind="i18n: 'Gift Message (optional)'"></span>
    </div>
    <div class="gift-options-content">
        <fieldset class="fieldset">
            <div class="field field-to">
                <label data-bind="attr: {for: 'gift-message-whole-to-' + index }" class="label">
                    <span data-bind="i18n: 'To:'"></span>
                </label>
                <div class="control">
                    <input type="text"
                           class="input-text"
                           data-bind="value: getObservable('recipient'), attr: { id: 'gift-message-whole-to-' + index }">
                </div>
            </div>

            <div class="field field-from">
                <label data-bind="attr: {for: 'gift-message-whole-from-' + index }" class="label">
                    <span data-bind="i18n: 'From:'"></span>
                </label>
                <div class="control">
                    <input type="text"
                           class="input-text"
                           data-bind="value: getObservable('sender'), attr: { id: 'gift-message-whole-from-' + index }">
                </div>
            </div>
            <div class="field text">
                <label for="gift-message-whole-message" class="label">
                    <span data-bind="i18n: 'Message:'"></span>
                </label>
                <div class="control">
                    <textarea id="gift-message-whole-message"
                              class="input-text"
                              rows="5" cols="10"
                              data-bind="value: getObservable('message')"></textarea>
                </div>
            </div>
        </fieldset>

    </div>
</div>
<!-- /ko -->
<div class="actions-toolbar">
    <div class="secondary">
        <button type="submit" class="action secondary action-update" data-bind="
                    attr: {title: $t('Update')},
                    click: $data.submitOptions.bind($data)">
            <span data-bind="i18n: 'Update'"></span>
        </button>
        <button class="action action-cancel" data-bind="
                    attr: {title: $t('Cancel')},
                    click: $data.hideFormBlock.bind($data)">
            <span data-bind="i18n: 'Cancel'"></span>
        </button>
    </div>
</div>

vendor/magento/module-checkout/view/frontend/web/template/billing-address/form.html

<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<div class="billing-address-form" data-bind="fadeVisible: isAddressFormVisible">
    <!-- ko foreach: getRegion('before-fields') -->
    <!-- ko template: getTemplate() --><!-- /ko -->
    <!--/ko-->
    <form data-bind="attr: {'data-hasrequired': $t('* Required Fields')}">
        <fieldset
            data-bind="attr: { id:'billing-new-address-form-'+index, value:index}"
            class="billing-new-address-form fieldset address">
            <!-- ko foreach: getRegion('additional-fieldsets') -->
            <!-- ko template: getTemplate() --><!-- /ko -->
            <!--/ko-->
            <!-- ko if: (isCustomerLoggedIn && customerHasAddresses) -->
            <div class="choice field">
                <input type="checkbox" class="checkbox"  data-bind="checked: saveInAddressBook, attr: {id: 'billing-save-in-address-book-' + getCode($parent)}" />
                <label class="label" data-bind="attr: {for: 'billing-save-in-address-book-' + getCode($parent)}" >
                    <span data-bind="i18n: 'Save in address book'"></span>
                </label>
            </div>
            <!-- /ko -->
        </fieldset>
    </form>
</div>

Cheers

Answer 2

if u want to Resolved issued than follow this step

1. first found where that html in .phtml file
2. Now anlaysis any that get data with loop like(for,foreach)
3. if data get with loop than that id with add some unique data

just like this

<?php
foreach ($variable as $key => $value) {
 ?>
      <div id="billing-new-address-form<?php echo "-"."daynamic some unique id"; ?>"></div>
 <?php
}
?>

and uniq id genarated