# Global Context

Slidev injects several global context values for advanced navigation controls.

## Direct Usage {#direct-usage}

You can access them directly in your slides or components:

```md [slides.md]
# Page 1

Current page is: {{ $nav.currentPage }}
```

```vue [Foo.vue]
<template>
  <div>Title: {{ $slidev.configs.title }}</div>
  <button @click="$nav.next">
    Next Click
  </button>
  <button @click="$nav.nextSlide">
    Next Slide
  </button>
</template>
```

## Composable Usage {#composable-usage}

> Available since v0.48.0

If you want to get the context programmatically (also type-safely), you can import composables from `@slidev/client`:

```vue
<script setup>
import { onSlideEnter, onSlideLeave, useDarkMode, useIsSlideActive, useNav, useSlideContext } from '@slidev/client'

const { $slidev } = useSlideContext()
const { currentPage, currentLayout, currentFrontmatter, currentSlideRoute } = useNav()
const { isDark } = useDarkMode()
const isActive = useIsSlideActive()
onSlideEnter((to, from) => { /* ... */ })
onSlideLeave((to, from) => { /* ... */ })
// ...
</script>
```

> [!NOTE]
> Previously, you might see the usage of importing nested modules like `import { isDark } from '@slidev/client/logic/dark.ts'`, this is **NOT RECOMMENDED** as they are internal implementation details and may change in the future. Always use the public APIs from `@slidev/client` if possible.

::: warning

When the `useSlideContext` composable is used in a file, the automatic injection of `$slidev` will be disabled. You need to manually get the `$slidev` object to the `useSlideContext` function.

:::

<SeeAlso :links="['features/slide-hook']" />

## Properties {#properties}

### `$slidev` {#slidev}

The global context object.

### `$frontmatter` {#frontmatter}

The frontmatter object of the current slide. Note that this is empty for components out of the slides like <LinkInline link="features/global-layers" />.

### `$clicks` {#clicks}

`$clicks` hold the number of clicks on the current slide. Can be used conditionally to show different content on clicks.

```html
<div v-if="$clicks > 3">Content</div>
```

See the <LinkInline link="guide/animations" /> guide for more information.

### `$nav` {#nav}

A reactive object holding the properties and controls of the slide navigation. For examples:

```js
$nav.next() // go next step
$nav.nextSlide() // go next slide (skip clicks)
$nav.go(10) // go slide #10

$nav.currentPage // current slide number
$nav.currentLayout // current layout name
$nav.currentFrontmatter // current slide frontmatter, including custom fields
```

For more properties available, refer to the [`SlidevContextNav` interface](https://github.com/slidevjs/slidev/blob/main/packages/client/composables/useNav.ts).

### `$page` {#page}

`$page` holds the number of the current page, 1-indexed.

```md
Page: {{ $page }}

Is current page active: {{ $page === $nav.currentPage }}
```

> [!Note] > `$nav.clicks` is a global state while `$clicks` is the local clicks number for each slide.

### `$renderContext` {#render-context}

`$renderContext` holds the current render context, which can be `slide`, `overview`, `presenter` or `previewNext`

```md
<div v-if="['slide', 'presenter'].includes($renderContext)">
  This content will only be rendered in main slides view
</div>
```

You can also use the [`<RenderWhen>` component](../builtin/components#renderwhen).

### `$slidev.configs` {#configs}

A reactive object holding the configurations for the slide project. For example:

```md
---
title: My First Slidev!
---

# Page 1

---

# Any Page

{{ $slidev.configs.title }} // 'My First Slidev!'
```

### `$slidev.themeConfigs` {#theme-configs}

A reactive object holding the parsed theme configurations:

```yaml
---
title: My First Slidev!
themeConfig:
  primary: '#213435'
---
```

Then the theme can access the primary color like:

```md
{{ $slidev.themeConfigs.primary }} // '#213435'
```

## Types {#types}

If you want to get a type programmatically, you can import types like `TocItem` from `@slidev/types`:

```vue
<script setup>
import type { TocItem } from '@slidev/types'

function tocFunc(tree: TocItem[]): TocItem[] {
  // ...
}
</script>
```
