1.在json页面配置：
{
"enablePullDownRefresh": true
}
2.调用刷新函数
onPullDownRefresh: function() {
wx.showNavigationBarLoading() //在标题栏中显示加载
this.updateBlogs() //重新加载数据
//模拟加载 1秒
setTimeout(function () {
// complete
wx.hideNavigationBarLoading() //完成停止加载
wx.stopPullDownRefresh() //停止下拉刷新
}, 1000);
},
updateBlogs: function () {
var that = this
wx.request({
url: common.baseUrl + \'blog_rss.php\',
data: {
},
header: {
\'Content-Type\': \'application/json\'
},
success: function (res) {
var feeds = feed.getBlogs(res.data);
wx.setStorage({
key: "blog_feeds",
data: feeds
})
that.setData({
feeds: feeds
})
}
})
} 
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