feat: add language detector (#67)

* feat: add language detector

* style: fmt code

1 files changed, 5 insertions, 2 deletions

diff --git a/src/App.js b/src/App.js
index f195431..0e975fb 100644
--- a/src/App.js
+++ b/src/App.js
@@ -16,9 +16,12 @@ function App() {
 
       <div>
         <label>{t('select')}</label>
-        <select onChange={(e) => i18n.changeLanguage(e.target.value)}>
+        <select
+          value={i18n.language}
+          onChange={(e) => i18n.changeLanguage(e.target.value)}
+        >
           <option value="en-US">en-US</option>
-          <option value="简体中文">简体中文</option>
+          <option value="zh-CN">简体中文</option>
           <option value="es">es</option>
           <option value="pt">Português</option>
         </select>