add watch

src/utils/watch.js

+function observe(obj, key, watchFun, deep, page) {
+  let val = obj[key];
+
+  if (val != null && typeof val === "object" && deep) {
+    Object.keys(val).forEach((item) => {
+      observe(val, item, watchFun, deep, page);
+    });
+  }
+
+  Object.defineProperty(obj, key, {
+    configurable: true,
+    enumerable: true,
+    set: function(value) {
+      watchFun.call(page, value, val);
+      val = value;
+
+      if (deep) {
+        observe(obj, key, watchFun, deep, page);
+      }
+    },
+    get: function() {
+      return val;
+    }
+  });
+}
+
+export function setWatcher(page) {
+  let data = page.data;
+  let watch = page.watch;
+  if(!watch) return false
+  Object.keys(watch).forEach((item) => {
+    let targetData = data;
+    let keys = item.split(".");
+    for (let i = 0; i < keys.length - 1; i++) {
+      targetData = targetData[keys[i]];
+    }
+    let targetKey = keys[keys.length - 1];
+    let watchFun = watch[item].handler || watch[item];
+    let deep = watch[item].deep;
+    observe(targetData, targetKey, watchFun, deep, page);
+  });
+}

src/utils/wxService.js

@@ -18,7 +18,7 @@ const config = require('../config/index').envInfo
 import utils from './util'
 const citysData = require('./city.js')
 import { Integer } from './integerDigitalConvertion'
-
+import * as watch from "./watch.js";
 let openCardLister = null
 
 /**