From 0c21d67486665d7889547a4614ef18e3307d2af0 Mon Sep 17 00:00:00 2001
From: dirk <inspiration520@gmail.com>
Date: Thu, 20 Jun 2019 22:07:44 +0800
Subject: [PATCH] diary on Jun 20.

---
 diary.js | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 diary.js

diff --git a/diary.js b/diary.js
new file mode 100644
index 0000000..d42c30f
--- /dev/null
+++ b/diary.js
@@ -0,0 +1,36 @@
+const DATA = new Date(2019, 6, 20);
+const WEATHER = "sunny";
+const LOCATION = "shenzhen";
+
+class Dirkwei {
+  constructor(name) {
+    if (!Dirkwei.instance) {
+      this.name = name;
+      this.todoList = [];
+      Dirkwei.instance = this;
+    }
+    return Dirkwei.instance;
+  }
+
+  cookAfterWork(food) {
+    console.log(`${this.name} make ${food}`);
+    return this;
+  }
+
+  addTempThingsTodo(...fncs) {
+    this.todoList.push(...fncs);
+  }
+
+  finishTodoList() {
+    this.todoList.forEach(task => task());
+  }
+}
+
+Dirkwei.instance = undefined;
+
+const me = new Dirkwei("dirkwei");
+me.addTempThingsTodo(
+  () => console.log("read PHP code"),
+  () => console.log("finish my homework.")
+);
+me.cookAfterWork("fried dumplings").finishTodoList();