task10--调整子类；增加新的conjured子类

gildedRose/src/AgedBrie.js

@@ -6,12 +6,12 @@ export class AgedBrie extends Item {
     this.name = 'Aged Brie'
     this.name = 'Aged Brie'
   }
   }
 
 
-  updateQuality(item) {
-    if (item.quality < 50) {
-      item.quality = item.quality + 1
+  updateQuality() {
+    if (this.quality < 50) {
+      this.quality = this.quality + 1
     }
     }
   }
   }
-  updateQualityAfterExpired(item) {
+  updateQualityAfterExpired() {
     return
     return
   }
   }
   isAgedBire() {
   isAgedBire() {

gildedRose/src/BackstagePass.js

@@ -9,24 +9,24 @@ export class BackstagePass extends Item{
   isBackStage() {
   isBackStage() {
     return true
     return true
   }
   }
-  updateQuality(item) {
-    if (item.quality >= 50) {
+  updateQuality() {
+    if (this.quality >= 50) {
       return
       return
     }
     }
-    if (item.sell_in < 11) {
-      if (item.quality < 50) {
-        item.quality = item.quality + 1
+    if (this.sell_in < 11) {
+      if (this.quality < 50) {
+        this.quality = this.quality + 1
       }
       }
     }
     }
-    if (item.sell_in < 6) {
-      if (item.quality < 50) {
-        item.quality = item.quality + 1
+    if (this.sell_in < 6) {
+      if (this.quality < 50) {
+        this.quality = this.quality + 1
       }
       }
     }
     }
   }
   }
-  updateQualityAfterExpired(item) {
-    if (item.quality < 50) {
-      item.quality = item.quality + 1
+  updateQualityAfterExpired() {
+    if (this.quality < 50) {
+      this.quality = this.quality + 1
     }
     }
   }
   }
 }
 }

gildedRose/src/Conjured.js

+import { Item } from './item'
+
+export class Conjured extends Item {
+  constructor(sell_in, quality) {
+    super(sell_in, quality)
+    this.name = 'Conjured'
+  }
+
+  updateQuality() {}
+  updateQualityAfterExpired() {
+    this.quality -= 2
+  }
+  isConjured() {
+    return true
+  }
+}

gildedRose/src/Sulfuras.js

 import { Item } from './item'
 import { Item } from './item'
 
 
-export class Sulfuras extends Item{
+export class Sulfuras extends Item {
   constructor(sell_in, quality) {
   constructor(sell_in, quality) {
     super(sell_in, quality)
     super(sell_in, quality)
     this.name = 'Sulfuras, Hand of Ragnaros'
     this.name = 'Sulfuras, Hand of Ragnaros'
@@ -9,11 +9,11 @@ export class Sulfuras extends Item{
   isSulfuras() {
   isSulfuras() {
     return true
     return true
   }
   }
-  updateQuality(item) {}
-  updateQualityAfterExpired(item) {
+  updateQuality() {}
+  updateQualityAfterExpired() {
     return
     return
   }
   }
-  updateSellIn(item) {
+  updateSellIn() {
     return
     return
   }
   }
 }
 }