diff --git a/app.js b/app.js
new file mode 100644
index 0000000..1ed57c4
--- /dev/null
+++ b/app.js
@@ -0,0 +1,19 @@
+// app.js
+App({
+  onLaunch() {
+    // 展示本地存储能力
+    const logs = wx.getStorageSync('logs') || []
+    logs.unshift(Date.now())
+    wx.setStorageSync('logs', logs)
+
+    // 登录
+    wx.login({
+      success: res => {
+        // 发送 res.code 到后台换取 openId, sessionKey, unionId
+      }
+    })
+  },
+  globalData: {
+    userInfo: null
+  }
+})