Merge branch '00-formal' into dev

src/components/blessingPreheat/courseItem/index.js

@@ -11,11 +11,23 @@ class CourseItem extends Component {
 
   componentDidMount() {
     const { time } = this.props;
+    this.startCountDown(time);
+  }
+
+  componentWillReceiveProps(nextProps) {
+    const { time: newTime } = nextProps
+    const { time: oldTime } = this.props;
+    if(oldTime != newTime) {
+      this.startCountDown(newTime);
+    }
+  }
+
+  startCountDown = (time) => {
     if(time) {
-    let date = time * 1000,
-      hours = 0,
-      minutes = 0,
-      seconds = 0;
+      let date = time * 1000,
+        hours = 0,
+        minutes = 0,
+        seconds = 0;
       setInterval(() => {
           date -= 1000
           hours = `${parseInt(date / (60 * 60 * 1000))}`.padStart(2, 0);