添加一个讲解如何使用MobX的Demo

MobXDemo1/assets/Script/Helloworld.ts

@@ -0,0 +1,38 @@
+import { observer, render } from "./Observer";
+import { StoreHello } from "./StoreHello";
+
+const { ccclass, property } = cc._decorator;
+
+@ccclass
+@observer
+export default class Helloworld extends cc.Component {
+
+    @property(cc.Label)
+    label: cc.Label = null;
+
+    @property
+    text: string = 'hello';
+
+    __preload() {
+        console.log('__preload');
+    }
+
+    onLoad() {
+        console.log('onLoad');
+    }
+
+    start() {
+        console.log('start');
+        // this.label.string = this.text;
+    }
+
+    @render
+    showCount() {
+        console.log('hello', StoreHello.getInstance().count);
+        this.label.string = '' + StoreHello.getInstance().count;
+    }
+
+    onBtnAcount() {
+        StoreHello.getInstance().addCount();
+    }
+}