页面事件

"enablePullDownRefresh": true

onPullDownRefresh() {
    //
}

onReachBottom() {
    //
}

onShareAppMessage() {
    //
}

_load(flag) {
    wx.request({
        url: this.data.baseUrl + '/good/page?page=' + this.page + '&pageSize=' + this.pageSize,
        success: res => {
            console.log(res);
            this.setData({
                goods: [...this.data.goods, ...res.data],
                total: res.header['X-Total-Count']
            })
            //下拉刷新才执行
            if(flag){
                wx.stopPullDownRefresh()
            }
        },
        fail: err => {
            console.log(err);
        },
        complete: () => {
            console.log('log done');
        }
    })
}

函数声明 - 根据cb的有无决定是否执行特定操作

_load(cb) {
    //其他逻辑
    cb&cb()
}

函数执行 - 无形参cb，正常执行

this._load()

函数执行 - 有形参cb，执行特定操作

this._load(()=>{
    wx.stopPullDownRefresh()  
})

_load(flag) {
    //开始加载时，为真
    this.isLoading = true
    wx.request({
        url: this.data.baseUrl + '/good/page?page=' + this.page + '&pageSize=' + this.pageSize,
        success: res => {
            console.log(res);
            this.setData({
                goods: [...this.data.goods, ...res.data],
                total: res.header['X-Total-Count']
            })
            //下拉刷新才执行
            if(flag){
                wx.stopPullDownRefresh()
            }
        },
        fail: err => {
            console.log(err);
        },
        complete: () => {
            console.log('log done');
            //加载完毕为假
            this.isLoading = false
        }
    })
}