uniapp如何实现懒加载

onLoad() {
// ajax请求
this.ajaxCode(this.per)
},
onReachBottom: function() {
// 下拉懒加载
++this.per;
uni.request({
url: 'https://www.zrzj.com/api/index/homePage',
method: 'get',
data: {
p: this.per
},
success: (res) => {
var next_data = res.data.result
// 加载新数组
this.products = this.products.concat(next_data)
}
})
},
methods: {
ajaxCode(per) {
uni.request({
url: 'https://www.zrzj.com/api/index/homePage',
method: 'get',
data: {
p: per
},
success: (res) => {
var _data = res.data.result
this.products = _data;
}
})
}
}