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86 lines
2.2 KiB
Markdown
86 lines
2.2 KiB
Markdown
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# Updating headers with Nuxt.js
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Nuxt.js uses [`vue-meta`](https://github.com/declandewet/vue-meta) to update the `headers` and `html attributes` of your applications.
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Nuxt.js configures `vue-meta` with these options:
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```js
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{
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keyName: 'head', // the component option name that vue-meta looks for meta info on.
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attribute: 'n-head', // the attribute name vue-meta adds to the tags it observes
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ssrAttribute: 'n-head-ssr', // the attribute name that lets vue-meta know that meta info has already been server-rendered
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tagIDKeyName: 'hid' // the property name that vue-meta uses to determine whether to overwrite or append a tag
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}
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```
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## Updating the title
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To update the title of the page, just add `head.title` in your page component.
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`pages/index.vue`
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```html
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<template>
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<h1>Home page 🚀</h1>
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</template>
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<script>
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export default {
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head: {
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title: 'Home page 🚀'
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}
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}
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</script>
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```
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## Meta tags and more
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To know the list of options you can give to `head`, take a look at [`vue-meta` documentation](https://github.com/declandewet/vue-meta#recognized-metainfo-properties).
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## Using `data` values inside `head`
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You might want to use the component data to display different headers, like a post title for example. Just use `head` as a function and you can use `this` inside to access your component data.
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Example of displaying the post title:
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```html
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<script>
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export default {
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data ({ params }) {
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// fetch the post from the API
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return axios.get(`https://my-api/posts/${params.id}`)
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.then((res) => {
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return { title: res.data.title }
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})
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},
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head () {
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return {
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title: this.title
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}
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}
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}
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</script>
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```
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## Defaults metas
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Nuxt.js let you define all the defaults metas for your application inside the `nuxt.config.js`, use the same field `head`:
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```js
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module.exports = {
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head: {
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titleTemplate: '%s - Nuxt.js',
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meta: [
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{ charset: 'utf-8' },
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{ name: 'viewport', content: 'width=device-width, initial-scale=1' },
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{ hid: 'description', name: 'description', content: 'Meta description' }
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]
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}
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}
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```
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## Demo
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```bash
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npm install
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npm start
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```
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Go to [http://localhost:3000](http://localhost:3000) and navigate trough the app. Notice how the page's title changes between the pages and is also server-side rendered.
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