ui-modal

The Modal API allows you to display an overlay that prevents interaction with the rest of the app until dismissed. It is used by customizing your Modal content with the `ui-modal` element and then opening it with the `show()` instance method or the `shopify.modal.show('modal-id')` API.

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ui-nav-menu

The Navigation Menu API creates a navigation menu for your app. On desktop web browsers, the navigation menu appears as part of the app nav, on the left of the screen. On Shopify mobile, the navigation menu appears in a dropdown from the TitleBar. This is modeled after the [HTML nav element](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/nav). Note that nested navigation items are not supported.

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ui-save-bar

The Save Bar API is used to indicate that a form on the current page has unsaved information. It can be controlled declaratively through the `ui-save-bar` element.

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ui-title-bar

The Title Bar API allows you to populate a standardized title bar with button actions and navigation breadcrumbs.

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