<div class="language" @click="handleToggleLanguage($event, LANGUAGE_FE_ZH)">
    <el-dropdown-item divided class="bottom-item">
         <el-radio v-model="language" :label="LANGUAGE_FE_ZH">中文</el-radio>
    </el-dropdown-item>
</div>
<div class="language" @click="handleToggleLanguage($event, LANGUAGE_FE_EN)">
   <el-dropdown-item class="bottom-item">
        <el-radio v-model="language" :label="LANGUAGE_FE_EN">English</el-radio>
        </el-dropdown-item>
</div> 

// 切換語言
        handleToggleLanguage(event, lang) {
            if (event.target.tagName === 'INPUT') {
                return;
            } 
            this.$i18n.locale = lang; 
            this.setLanguage(lang);
        },