useColorMode

类别

浏览器

导出大小

2.69 kB

上次更改

5 天前

演示

源代码

← 点击更改颜色模式

基本用法

import { useColorMode } from '@vueuse/core'

const mode = useColorMode() // Ref<'dark' | 'light'>

默认情况下，它将使用 usePreferredDark (又名 auto 模式) 匹配用户的浏览器偏好。读取 ref 时，默认情况下它将返回当前的颜色模式（dark、light 或您的自定义模式）。通过启用 emitAuto 选项，可以将 auto 模式包含在返回的模式中。写入 ref 时，它将触发 DOM 更新并将颜色模式持久化到本地存储（或您的自定义存储）。您可以传递 auto 以设置回自动模式。

mode.value // 'dark' | 'light'

mode.value = 'dark' // change to dark mode and persist

mode.value = 'auto' // change to auto mode

配置

import { useColorMode } from '@vueuse/core'

const mode = useColorMode({
  attribute: 'theme',
  modes: {
    // custom colors
    dim: 'dim',
    cafe: 'cafe',
  },
}) // Ref<'dark' | 'light' | 'dim' | 'cafe'>

高级用法

您还可以显式访问系统偏好设置和存储的用户覆盖模式。

import { useColorMode } from '@vueuse/core'

const { system, store } = useColorMode()

system.value // 'dark' | 'light'
store.value // 'dark' | 'light' | 'auto'

const myColorMode = computed(() => store.value === 'auto' ? system.value : store.value)

组件用法

此函数还通过 @vueuse/components 包提供了一个无渲染组件版本。了解更多关于用法的信息。

vue

<template>
  <UseColorMode v-slot="{ mode }">
    <button @click="mode = mode === 'dark' ? 'light' : 'dark'">
      Mode {{ mode }}
    </button>
  </UseColorMode>
</template>

类型声明

显示类型声明

typescript

export type BasicColorMode = "light" | "dark"
export type BasicColorSchema = BasicColorMode | "auto"
export interface UseColorModeOptions<T extends string = BasicColorMode>
  extends UseStorageOptions<T | BasicColorMode> {
  /**
   * CSS Selector for the target element applying to
   *
   * @default 'html'
   */
  selector?: string | MaybeElementRef
  /**
   * HTML attribute applying the target element
   *
   * @default 'class'
   */
  attribute?: string
  /**
   * The initial color mode
   *
   * @default 'auto'
   */
  initialValue?: MaybeRefOrGetter<T | BasicColorSchema>
  /**
   * Prefix when adding value to the attribute
   */
  modes?: Partial<Record<T | BasicColorSchema, string>>
  /**
   * A custom handler for handle the updates.
   * When specified, the default behavior will be overridden.
   *
   * @default undefined
   */
  onChanged?: (
    mode: T | BasicColorMode,
    defaultHandler: (mode: T | BasicColorMode) => void,
  ) => void
  /**
   * Custom storage ref
   *
   * When provided, `useStorage` will be skipped
   */
  storageRef?: Ref<T | BasicColorSchema>
  /**
   * Key to persist the data into localStorage/sessionStorage.
   *
   * Pass `null` to disable persistence
   *
   * @default 'vueuse-color-scheme'
   */
  storageKey?: string | null
  /**
   * Storage object, can be localStorage or sessionStorage
   *
   * @default localStorage
   */
  storage?: StorageLike
  /**
   * Emit `auto` mode from state
   *
   * When set to `true`, preferred mode won't be translated into `light` or `dark`.
   * This is useful when the fact that `auto` mode was selected needs to be known.
   *
   * @default undefined
   * @deprecated use `store.value` when `auto` mode needs to be known
   * @see https://vueuse.org.cn/core/useColorMode/#advanced-usage
   */
  emitAuto?: boolean
  /**
   * Disable transition on switch
   *
   * @see https://paco.me/writing/disable-theme-transitions
   * @default true
   */
  disableTransition?: boolean
}
export type UseColorModeReturn<T extends string = BasicColorMode> = Ref<
  T | BasicColorSchema
> & {
  store: Ref<T | BasicColorSchema>
  system: ComputedRef<BasicColorMode>
  state: ComputedRef<T | BasicColorMode>
}
/**
 * Reactive color mode with auto data persistence.
 *
 * @see https://vueuse.org.cn/useColorMode
 * @param options
 */
export declare function useColorMode<T extends string = BasicColorMode>(
  options?: UseColorModeOptions<T>,
): UseColorModeReturn<T>