uniapp 下拉选择器picker

<picker mode="selector" :range="options" @change="onPickerChange">
        <div style="border: 1px solid #ccc;">选择品牌</div>
</picker>

let options = reactive(['选项1', '选项2', '选项3', '选项4']);

const onPickerChange = (e) => {
        const index = e.detail.value;
        console.log('index',index);
}