小程序

全局数据共享

import {createStoreBindings} from 'mobx-miniprogram-bindings'
import {store} from '../../store/store'

---

onLoad: function (options) {
// 调用createStoreBindings方法
this.storeBindings= createStoreBindings(this,{
store,//数据源
fields:['numA','numB','sum'],//用到哪些字段
actions:['updateNum1']
})
},

---

onUnload: function () {
this.storeBindings.detroyStoreBindings()

},
在页面中使用store成员
xml

点击查看代码

<van-button type="primary"
bindtap="add" data-step="{{1}}">numA+1</van-button>
<van-button  type="danger" bindtap="add" data-step="{{-1}}"> numA-1</van-button>

js

点击查看代码

 add(e){
    this.updateNum1(e.target.dataset.step)
    
  },