diff --git a/app/src/main/java/com/github/catvod/spider/JSDemo.java b/app/src/main/java/com/github/catvod/spider/JSDemo.java
index b0800bc2..9832d311 100644
--- a/app/src/main/java/com/github/catvod/spider/JSDemo.java
+++ b/app/src/main/java/com/github/catvod/spider/JSDemo.java
@@ -8,18 +8,18 @@ import com.whl.quickjs.wrapper.QuickJSContext;
 
 public class JSDemo extends Spider {
 
-    private QuickJSContext jsContext;
+    private QuickJSContext ctx;
 
     @Override
     public void init(Context context, String extend) {
-        jsContext = QuickJSContext.create();
-        jsContext.evaluate("var text = 'Hello QuickJS';");
-        String text = jsContext.getGlobalObject().getString("text");
+        ctx = QuickJSContext.create();
+        ctx.evaluate("var text = 'Hello QuickJS';");
+        String text = ctx.getGlobalObject().getString("text");
         SpiderDebug.log(text);
     }
 
     @Override
     public void destroy() {
-        jsContext.destroy();
+        ctx.destroy();
     }
 }