父亲:

<test122 :title='title' :catename="catename"></test122>

data() {
return {
num:1,
title:'我是你明哥哥',
catename:['红豆','花生','小米']
}
},

子组件:

<view class="">{{title}}</view>
<view v-for="(item,index) in catename" :key="index">
{{item}}
</view>

props:['title','catename']