useTitle

响应式文档标题。

此可组合项不兼容 SSR。

Demo

使用

import { useTitle } from '@vueuse/core'

const title = useTitle()
console.log(title.value) // print current title
title.value = 'Hello' // change current title

立即设置初始标题：

const title = useTitle('New Title')

传递一个 ref，当源 ref 改变时，标题将被更新：

import { shallowRef } from 'vue'
import { useTitle } from '@vueuse/core'

const messages = shallowRef(0)

const title = computed(() => {
  return !messages.value ? 'No message' : `${messages.value} new messages`
})

useTitle(title) // document title will match with the ref "title"

传入一个可选的模板标签 Vue Meta Title Template，以将标题更新并注入到此模板中：

const title = useTitle('New Title', { titleTemplate: '%s | My Awesome Website' })

observe 与 titleTemplate 不兼容。

类型声明

export type UseTitleOptionsBase = {
  /**
   * Restore the original title when unmounted
   * @param originTitle original title
   * @returns restored title
   */
  restoreOnUnmount?:
    | false
    | ((
        originalTitle: string,
        currentTitle: string,
      ) => string | null | undefined)
} & (
  | {
      /**
       * Observe `document.title` changes using MutationObserve
       * Cannot be used together with `titleTemplate` option.
       *
       * @default false
       */
      observe?: boolean
    }
  | {
      /**
       * The template string to parse the title (e.g., '%s | My Website')
       * Cannot be used together with `observe` option.
       *
       * @default '%s'
       */
      titleTemplate?: MaybeRef<string> | ((title: string) => string)
    }
)
export type UseTitleOptions = ConfigurableDocument & UseTitleOptionsBase
/**
 * Reactive document title.
 *
 * @see https://vueuse.org/useTitle
 * @param newTitle
 * @param options
 * @description It's not SSR compatible. Your value will be applied only on client-side.
 */
export declare function useTitle(
  newTitle: ReadonlyRefOrGetter<string | null | undefined>,
  options?: UseTitleOptions,
): ComputedRef<string | null | undefined>
export declare function useTitle(
  newTitle?: MaybeRef<string | null | undefined>,
  options?: UseTitleOptions,
): Ref<string | null | undefined>
export type UseTitleReturn = ReturnType<typeof useTitle>

useTextDirection

useUrlSearchParams