//app.json{"pages":["pages/index/index","pages/logs/logs"],"window":{"backgroundTextStyle":"light","navigationBarBackgroundColor": "#000","navigationBarTitleText": "WeChat","navigationBarTextStyle":"white"}
}

App({//如下为小程序的生命周期onLaunch: function() { },//监听初始化onShow: function() {  },//监听显示（进入前台）onHide: function() {  },//监听隐藏（进入后台：按home离开微信）onError: function(msg) {  },//监听错误//如下为自定义的全局方法和全局变量  globalFun:function(){},globalData: 'I am global data'
})

Page({data: {text: "This is page data."},//页面数据，用来维护视图，json格式onLoad: function(options) {  },//监听加载onReady: function() {  },//监听初次渲染完成onShow: function() {  },//监听显示onHide: function() {  },//监听隐藏onUnload: function() {  },//监听卸载onPullDownRefresh: function() {  },//监听下拉onReachBottom: function() {  },//监听上拉触底onShareAppMessage: function () {  },//监听右上角分享//如下为自定义的事件处理函数（视图中绑定的）viewTap: function() {//setData设置data值，同时将更新视图this.setData({text: 'Set some data for updating view.'})}
})

<!--{{}}绑定data中的指定数据并渲染到视图-->
<view class="title">{{text}}</view><!--wx:for获取数组数据进行循环渲染，item为数组的每项-->
<view wx:for="{{array}}"> {{item}} </view><!--wx:if条件渲染-->
<view wx:if="{{view == 'WEBVIEW'}}"> WEBVIEW </view>
<view wx:elif="{{view == 'APP'}}"> APP </view>
<view wx:else="{{view == 'MINA'}}"> MINA </view><!--模板-->
<template name="staffName"><view>FirstName: {{firstName}}, LastName: {{lastName}}</view>
</template>
<template is="staffName" data="{{...template.staffA}}"></template>
<template is="staffName" data="{{...template.staffB}}"></template><!--bindtap指定tap事件处理函数为ViewTap-->
<view bindtap="ViewTap"> 点我点我 </view>

Page({data: {//data数据主要用于视图绑定text:"我是一条测试",array:[0,1,2,3,4],view:"APP",template:{staffA: {firstName: 'Hulk', lastName: 'Hu'},staffB: {firstName: 'Shang', lastName: 'You'}}},ViewTap:function(){console.log('额，点到我了了~')}//自定义事件，主要用于事件绑定
})

/*app.json,该文件不能含有任何注释，所以正式应用需删除所有注释内容*/
{"pages":[//小程序的页面路径数组，第一条默认为首页，所有页面均需写在这里，否则不能加载"pages/weather/weather","pages/about/about","pages/city/city"],"window":{//小程序框架设置"navigationBarBackgroundColor": "#000","navigationBarTitleText": "天气预报","navigationBarTextStyle":"#fff","backgroundColor":"#666","backgroundTextStyle":"light","enablePullDownRefresh":true},"tabBar": {//小程序底部菜单设置"color": "#666","selectedColor": "#56abe4","backgroundColor": "#ddd","borderStyle":"black","list": [{"pagePath": "pages/weather/weather","iconPath": "images/tabbar/weather1.png","selectedIconPath": "images/tabbar/weather2.png","text": "天气预报"}, {"pagePath": "pages/city/city","iconPath": "images/tabbar/city1.png","selectedIconPath": "images/tabbar/city2.png","text": "设置城市"}, {"pagePath": "pages/about/about","iconPath": "images/tabbar/about1.png","selectedIconPath": "images/tabbar/about2.png","text": "关于我"}],"position":"bottom"}
}

//app.js
App({//1、系统事件部分onLaunch: function () {//小程序初始化时执行var that=this;that.curid = wx.getStorageSync('curid') || that.curid;//API：获取本地缓存，若不存在设置为全局属性that.setlocal('curid', that.curid);//调用全局方法
  },//2、自定义全局方法部分setlocal:function(id,val){wx.setStorageSync(id, val);//API：设置本地缓存
  },//3、自定义全局属性部分curid:"CN101010100",version:"1.0"
})

/**app.wxss**/
.container {margin: 0; padding: 0;}
.title{font-size: 14px; font-weight: bold;}

<!--weather.wxml-->
<view class="container"><view class="city" bindtap="bindViewTap"><text>当前城市：{{basic.city}}</text><!--{{}}用来获取同页js文件中注册页面data中的数据--><text class="update">{{basic.update.loc}}</text></view>
</view><!--省略。。。-->

/**weather.wxss**/
.city {padding: 3% 5%; background: #ddd;}
.city text{font-size: 16px; color: #666;}
.city .update{ font-size: 12px; float: right;}

//weather.js
var app = getApp();//获取当前小程序实例，方便使用全局方法和属性
Page({//1、页面数据部分,将绑定到视图wxml中data:{cur_id:app.curid,basic:"",now:""},//设置页面数据，后面空值将在页面显示时通过请求服务器获取//2、系统事件部分onShow:function(){var that = this;wx.showToast({title: '加载中',icon: 'loading',duration: 10000})//设置加载模态框that.getnow(function(d){//回调函数，根据数据设置页面data，更新到视图
      wx.hideToast();//隐藏加载框d.now.cond.src="http://files.heweather.com/cond_icon/"+d.now.cond.code+".png";that.setData({basic:d.basic,now:d.now})//更新数据，视图将同步更新
    })},//3、自定义页面方法：获取当前天气APIgetnow:function(fn){wx.request({//请求服务器，类似ajaxurl: 'https://free-api.heweather.com/v5/now', data: {city:app.curid,key:'01a7798b060b468abdad006ea3de4713'},//和风天气提供用户key，可自行注册获得header: {'Content-Type': 'application/json'},success: function(res) {fn(res.data.HeWeather5[0]);}//成功后将数据传给回调函数执行
    })},  //4、页面事件绑定部分bindViewTap:function(){wx.switchTab({url: '../city/city'})}//跳转菜单页面
})