xhml
<view catchtap="onCollectionTap" style="background:green" class="sotrge1" >读取缓存</view>
<view catchtap="onShareTap" style="background:red" class="sotrge2">移除缓存</view>
JS
//获取应用实例
// var postsData=require(‘../../data/posts-data.js‘);
var app = getApp()
Page({
  data: { 
 
  },
  onLoad: function(option){
    console.log(1);
    // this.setData({
    //   postData:postData
    // })
    // 添加或修改缓存
    // wx.setStorageSync("key", "喝水")
    wx.setStorageSync("key", "吃饭")
  },
  onCollectionTap:function(event){
    var game=wx.getStorageSync(‘key‘)
    console.log(game)
  },
  onShareTap:function(event){
    wx.removeStorageSync(‘key‘)
  }
})
原文:http://www.cnblogs.com/dianzan/p/7476315.html