发表情
```javascript
let datas = new Array(41).fill(0).map((_, i)=>({
image: `https://shengjian-1258861966.image.myqcloud.com/wxmini/common/image/gif/emoji/room_emoji${i+1}.gif?imageMogr2/format/png`,
id: `room_emoji${i+1}`
}))
return ctx.select({
datas,
props:{
name: 'id',
image: 'image'
}
}).then(item=>{
let id = item.option && item.option.id
return {
"roomid": ctx.room._id,
"msgBody": {
"messageId": Date.now() + '',
"messageType": 4,
"msgTime": Date.now(),
"userInfo": ctx.user,
"emojiId": id
},
"cmd": "roomMsg",
}
})
```