微信小程序开发之数据存储 参数传递 数据缓存

 wx.navigateTo({
 url: "../newpage/newpage" + this.data.infofromindex,
 });

 try {
 wx.setStorageSync('infofrominput', this.data.infofrominput)
 } catch (e) {
 }

 //获取
 wx.getStorage({
  key: 'infofrominput',
  success: function (res) {
  _this.setData({
   infofromstorage: res.data,
  })
  }
 })

//index.js 
//获取应用实例 
var app = getApp() 
Page({ 
 data: { 
 info: app.data.info, 
 infofromindex: '来自index.js的信息', 
 infofrominput: '' 
 }, 
 onLoad: function () { 
 }, 
 //跳转到新页面 
 gotonewpage: function () { 
 wx.navigateTo({ 
 url: "../newpage/newpage" + this.data.infofromindex, 
 }); 
 }, 
 //获取输入值 
 searchInputEvent: function (e) { 
 console.log(e.detail.value) 
 this.setData({ infofrominput: e.detail.value }) 
 }, 
 //保存参数 
 saveinput: function () { 
 try { 
 wx.setStorageSync('infofrominput', this.data.infofrominput) 
 } catch (e) { 
 } 
 } 
}) 

<!--index.wxml--> 
<view> 
<button style="background-color:#00ff00;margin:20rpx" bindtap="gotonewpage">跳转</button> 
<input style="background-color:#eee;margin:20rpx;height:80rpx" placeholder="请输入需要保存的参数" bindinput="searchInputEvent" /> 
<button style="background-color:#ff0000;margin:20rpx" bindtap="saveinput">存入Storage</button> 
</view> 

//newpage.js 
//获取应用实例 
var app = getApp() 
Page({ 
 data: { 
 infofromapp: app.data.infofromapp, 
 infofromindex: '', 
 infofromstorage: '', 
 }, 
 onLoad: function (options) { 
 var _this = this; 
 var infofromindex = options.infofromindex; 
 this.setData({ 
  infofromindex: infofromindex 
 }) 
 //获取 
 wx.getStorage({ 
  key: 'infofrominput', 
  success: function (res) { 
  _this.setData({ 
   infofromstorage: res.data, 
  }) 
  } 
 }) 
 } 
}) 

<!--newpage.wxml--> 
<view style="width:100%;margin:30rpx">infofromapp:{{infofromapp}}</view> 
<view style="width:100%;margin:30rpx">infofromindex:{{infofromindex}}</view> 
<view style="width:100%;margin:30rpx">infofromstorage:{{infofromstorage}}</view> 

//app.js 
App({ 
 data: { 
 infofromapp: '来自APP.js的信息' 
 }, 
 onLaunch: function () { 
 
 } 
})