# Locale changing
Normally, using the root Vue instance as the starting point, all child components are localized using the locale property of the VueI18n class as a reference.
Sometimes you might want to dynamically change the locale. In that case you can change the value of the locale property of the VueI18n instance.
const i18n = new VueI18n({
locale: 'ja', // set locale
...
})
// create root Vue instance
new Vue({
i18n,
...
}).$mount('#app')
// change other locale
i18n.locale = 'en'
Each component contains a VueI18n instance referenced as the $i18n property that can also be used to change the locale.
Example:
<template>
<div class="locale-changer">
<select v-model="$i18n.locale">
<option v-for="(lang, i) in langs" :key="`Lang${i}`" :value="lang">
{{ lang }}
</option>
</select>
</div>
</template>
<script>
export default {
name: 'locale-changer',
data () {
return { langs: ['ja', 'en'] }
}
}
</script>
Notice
️ Locale changing is ignored for components that use sync: false.
Component vs. root scope
️ Changing $i18n.locale inside a component does not update the root locale. If you rely on the root locale, for example when using root fallbacks, use $root.$i18n.locale instead of $i18n.locale.