feat(docs): Dropdown code for composition (#2194)

Co-authored-by: 无星 <32910694@qq.com>

website/docs/en-US/dropdown.md

@@ -90,6 +90,24 @@ Use the button to trigger the dropdown list.
     }
   }
 </script>
+<!--
+<setup>
+
+  import { defineComponent } from 'vue';
+
+  export default defineComponent({
+    setup() {
+      const handleClick = () => {
+        alert('button click');
+      };
+      return {
+        handleClick,
+      };
+    },
+  });
+
+</setup>
+-->
 ```
 :::
 
@@ -245,6 +263,26 @@ Clicking each dropdown item fires an event whose parameter is assigned by each i
     }
   }
 </script>
+<!--
+<setup>
+
+  import { defineComponent } from 'vue';
+  import { ElMessage } from 'element-plus';
+
+  export default defineComponent({
+    setup() {
+      
+      const handleCommand = (command) => {
+        ElMessage(`click on item ${command}`);
+      };
+      return {
+        handleCommand,
+      };
+    },
+  });
+
+</setup>
+-->
 ```
 :::
 

website/docs/es/dropdown.md

@@ -91,6 +91,24 @@ Utilizando un botón para activar la lista desplegable.
     }
   }
 </script>
+<!--
+<setup>
+
+  import { defineComponent } from 'vue';
+
+  export default defineComponent({
+    setup() {
+      const handleClick = () => {
+        alert('button click');
+      };
+      return {
+        handleClick,
+      };
+    },
+  });
+
+</setup>
+-->
 ```
 :::
 
@@ -247,6 +265,26 @@ Al hacer clic en cada elemento desplegable se detona un evento cuyo parámetro e
     }
   }
 </script>
+<!--
+<setup>
+
+  import { defineComponent } from 'vue';
+  import { ElMessage } from 'element-plus';
+
+  export default defineComponent({
+    setup() {
+      
+      const handleCommand = (command) => {
+        ElMessage(`click on item ${command}`);
+      };
+      return {
+        handleCommand,
+      };
+    },
+  });
+
+</setup>
+-->
 ```
 :::
 

website/docs/fr-FR/dropdown.md

@@ -90,6 +90,24 @@ Utilisez le bouton pour ouvrir le menu déroulant.
     }
   }
 </script>
+<!--
+<setup>
+
+  import { defineComponent } from 'vue';
+
+  export default defineComponent({
+    setup() {
+      const handleClick = () => {
+        alert('button click');
+      };
+      return {
+        handleClick,
+      };
+    },
+  });
+
+</setup>
+-->
 ```
 :::
 
@@ -246,6 +264,26 @@ Le paramètre de cet évènement peut être assigné à chaque élément de la l
     }
   }
 </script>
+<!--
+<setup>
+
+  import { defineComponent } from 'vue';
+  import { ElMessage } from 'element-plus';
+
+  export default defineComponent({
+    setup() {
+      
+      const handleCommand = (command) => {
+        ElMessage(`click on item ${command}`);
+      };
+      return {
+        handleCommand,
+      };
+    },
+  });
+
+</setup>
+-->
 ```
 :::
 

website/docs/jp/dropdown.md

@@ -90,6 +90,24 @@ dropdownリストを起動するには、ボタンを使用します。
     }
   }
 </script>
+<!--
+<setup>
+
+  import { defineComponent } from 'vue';
+
+  export default defineComponent({
+    setup() {
+      const handleClick = () => {
+        alert('button click');
+      };
+      return {
+        handleClick,
+      };
+    },
+  });
+
+</setup>
+-->
 ```
 :::
 
@@ -245,6 +263,26 @@ dropdownリストを起動するには、ボタンを使用します。
     }
   }
 </script>
+<!--
+<setup>
+
+  import { defineComponent } from 'vue';
+  import { ElMessage } from 'element-plus';
+
+  export default defineComponent({
+    setup() {
+      
+      const handleCommand = (command) => {
+        ElMessage(`click on item ${command}`);
+      };
+      return {
+        handleCommand,
+      };
+    },
+  });
+
+</setup>
+-->
 ```
 :::
 

website/docs/zh-CN/dropdown.md

@@ -91,7 +91,24 @@
     }
   }
 </script>
+<!--
+<setup>
 
+  import { defineComponent } from 'vue';
+
+  export default defineComponent({
+    setup() {
+      const handleClick = () => {
+        alert('button click');
+      };
+      return {
+        handleClick,
+      };
+    },
+  });
+
+</setup>
+-->
 ```
 :::
 
@@ -246,6 +263,26 @@
     }
   }
 </script>
+<!--
+<setup>
+
+  import { defineComponent } from 'vue';
+  import { ElMessage } from 'element-plus';
+
+  export default defineComponent({
+    setup() {
+      
+      const handleCommand = (command) => {
+        ElMessage(`click on item ${command}`);
+      };
+      return {
+        handleCommand,
+      };
+    },
+  });
+
+</setup>
+-->
 ```
 :::