微信小程序上拉加载更多数据

data: {
    curpage: 1,
    list: null
},
onLoad: function() {
    wx.showLoading();
    var _this = this;
    /**初始化list*/
    _this.getAjaxList()
},
/**上拉动作, push数据*/
onReachBottom: function() {
    console.log(++this.data.curpage);
    this.getAjaxList();
},
getAjaxList: function() {
    wx.showLoading({
        mask: true
    });
    var _this = this;
    wx.request({
        url: 'https://huyahaha.com/video/listajax',
        data: {
            page: _this.data.curpage
        },
        header: {
            'content-type': 'application/json'
        },
        success: function(res) {
            wx.hideLoading() var data1 = _this.data.list;
            if (data1 == null) {
                _this.setData({
                    list: res.data.data.data
                });
                console.log('first');
                return;
            }
            for (var i = 0; i < res.data.data.data.length; i++) {
                data1.push(res.data.data.data[i]);
            }
            _this.setData({
                list: data1
            });
        }
    })
}