第一步：先到百度开放平台http://lbsyun.baidu.com申请ak
http://lbsyun.baidu.com/index.php?title=wxjsapi/guide/key
申请到ak后，在我的应用里就能查看到
然后下载文档：http://lbsyun.baidu.com/index.php?title=wxjsapi/wxjs-download
第二步：引入JS模块
第三步：编辑代码
.js
// 引用百度地图微信小程序JSAPI模块
var bmap = require(’…/…/libs/bmap-wx.js’);
Page({
data: {
weatherData: ‘’
},
onLoad: function () {
var that = this;
// 新建百度地图对象
var BMap = new bmap.BMapWX({
ak: ‘申请的ak’
});
var fail = function (data) {
console.log(data)
};
var success = function (data) {
var weatherData = data.currentWeather[0];
weatherData = ‘城市：’ + weatherData.currentCity + ‘\n’ + ‘PM2.5：’ + weatherData.pm25 + ‘\n’ + ‘日期：’ + weatherData.date + ‘\n’ + ‘温度：’ + weatherData.temperature + ‘\n’ + ‘天气：’ + weatherData.weatherDesc + ‘\n’ + ‘风力：’ + weatherData.wind + ‘\n’;
that.setData({
weatherData: weatherData
});
}
// 发起weather请求
BMap.weather({
fail: fail,
success: success
});
}
})
.wxml