diff --git a/src/models/DOBlock.ts b/src/models/DOBlock.ts
index a8e2afe..de1ee90 100644
--- a/src/models/DOBlock.ts
+++ b/src/models/DOBlock.ts
@@ -43,7 +43,8 @@ export class DOBlock {
   }
 
   public add_note(noteNumber: number): void {
-    if (!this.data.notes.includes(noteNumber)) {
+    const find = this.data.notes.indexOf(noteNumber)
+    if (find < 0) {
       this.data.notes.push(noteNumber)
       StorageManager.getInstance().onStageChanged()
     }
diff --git a/src/views/Stage.ts b/src/views/Stage.ts
index a3695ca..cc4a1b2 100644
--- a/src/views/Stage.ts
+++ b/src/views/Stage.ts
@@ -565,7 +565,8 @@ export class Stage extends Laya.Script {
     for (let i = 0; i < this.blocks.length; i++) {
       const block = this.blocks[i]
       const note_numbers = block.getData().get_notes()
-      if (note_numbers.includes(obj.getData().get_show()))
+      const find = note_numbers.indexOf(obj.getData().get_show())
+      if (find >= 0)
         list.push(block)
     }
     return list
diff --git a/src/views/dc/TrophyRoom.ts b/src/views/dc/TrophyRoom.ts
index f29bf00..d570d84 100644
--- a/src/views/dc/TrophyRoom.ts
+++ b/src/views/dc/TrophyRoom.ts
@@ -44,7 +44,8 @@ export class TrophyRoom extends Laya.Script {
     const monthMap: Map<number, Array<any>> = new Map()
     for (var i = 0; i < infos.length; i++) {
       obj = infos[i]
-      if (!years.includes(obj.year)) {
+      const find = years.indexOf(obj.year)
+      if (find < 0) {
         years.push(obj.year)
       }
       if (monthMap.has(obj.year) == false) {