diff --git a/examples/sites/demos/pc/app/date-picker/step-composition-api.vue b/examples/sites/demos/pc/app/date-picker/step-composition-api.vue
index 91c4b48cb8..19f42a3107 100644
--- a/examples/sites/demos/pc/app/date-picker/step-composition-api.vue
+++ b/examples/sites/demos/pc/app/date-picker/step-composition-api.vue
@@ -20,7 +20,7 @@ const step = ref({
   hour: 2,
   minute: 5
 })
-const value = ref([])
+const value = ref('')
 </script>
 
 <style scoped>